|Elevation||7,962 ft (2,427 m)|
|Parent range||Pacific Coast Ranges|
The Olympic Mountains are a mountain range on the Olympic Peninsula of western Washington in the United States. The mountains, part of the Pacific Coast Ranges, are not especially high - Mount Olympus is the highest at 7,962 ft (2,427 m); however, the eastern slopes rise out of Puget Sound and the western slopes are separated from the Pacific Ocean by the 20 to 35 km (12 to 22 mi) wide Pacific Ocean coastal plain. The western slopes are the wettest place in the 48 contiguous states. Most of the mountains are protected within the bounds of the Olympic National Park.
The Olympics have the form of a cluster of steep-sided peaks surrounded by heavily forested foothills and incised by deep valleys. They are surrounded by water on three sides, separated from the Pacific by the 20 to 35 km (12 to 22 mi) wide coastal plain. The general form of the range is more or less circular, or somewhat horseshoe-shaped, and the drainage pattern is radial.
Rivers radiate outwards to all sides. Clockwise from windward to leeward, the major watersheds are: Wynoochee, Humptulips, Quinault, Queets, Hoh, Bogachiel (all flowing into the Pacific; the Wynoochee by way of the Chehalis River, and the Humptulips by way of Grays Harbor), Lyre, Elwha, Dungeness (all flowing into the Strait of Juan de Fuca), Quilcene, Dosewallips, Duckabush, Hamma Hamma, and Skokomish (all flowing into Hood Canal).
List of summits
- Mount Olympus - highest point, eight glaciers
- Mount Constance - largest peak visible from Seattle
- Mount Anderson - West Peak of Mt Anderson is the hydrographic apex of the Olympic Mountains: From this peak, rivers flow outward to the Pacific Ocean, the Strait of Juan de Fuca, and Hood Canal.
- The Brothers - double peak visible from Seattle
- Mount Deception
- Mount Angeles
- Boulder Peak - Peak located in the Lake Crescent and Elwha River area
- Mount Storm King - located just to the south of Lake Crescent
The National Park is surrounded on the south, east, and northwest sides by the Olympic National Forest, with 5 Wilderness Areas, and on the southwest side by the Clearwater State Forest with one Natural Area Preserve (Washington Department of Natural Resources), and the Quinault Indian Reservation. State parks and wildlife areas occur in the lower elevations.
Precipitation varies greatly throughout the range, from the wet western slopes to the arid eastern ridges. Mount Olympus, nearly 8,000 feet (2,400 m) tall, is a mere 35 miles (56 km) from the Pacific Ocean, one of the steepest reliefs globally and accounting for the high precipitation of the area, as much as 240 inches (6,100 mm) of snow and rain on Mount Olympus. 140 and 170 inches (3,600 and 4,300 mm) of rain falls on the Hoh Rainforest annually, receiving the most precipitation of anywhere in the continental United States. Areas to the northeast of the mountains are located in a rain shadow and receive as little as 16 in (410 mm) of precipitation. Annual precipitation increases to about 30 in (760 mm) on the edges of the rain shadow around Port Townsend, the San Juan Islands, and Everett. 80% of precipitation falls during the winter. On the coastal plain, the winter temperature stays between −2 to 7 °C (28 to 45 °F). During the summer it warms up to stay between 10 and 24 °C (50 and 75 °F).
As a consequence of the high precipitation is the large number of snowfields and glaciers, reaching down to 1,500 m (5,000 ft) above sea level. There are about 266 glaciers crowning the Olympics peaks. The most prominent glaciers are those on Mount Olympus covering approximately 10 square miles (26 km2). Beyond the Olympic complex are the glaciers of Mount Carrie, the Bailey Range, Mount Christie, and Mount Anderson.
The Olympics are made up of an obducted clastic wedge material and oceanic crust. They are primarily Eocene sandstones, turbidites, and basaltic oceanic crust. Unlike the Cascades, the Olympic Mountains are not volcanic, and contain no granite.
Millions of years ago, vents and fissures opened under the Pacific ocean and lava flowed forth, creating huge underwater mountains and ranges called seamounts. The Farallon tectonic plate that formed a part of the Pacific ocean floor (separate from the Pacific plate) inched eastward toward North America about 35 million years ago and most of the sea floor subducted beneath the continental land mass of the North America plate. Some of the sea floor, however, was scraped off and jammed against the mainland, creating the dome that was the forerunner of today's Olympics. In this particular case, the future Olympics were being jammed into a corner created by the Vancouver Island and North Cascades microcontinents attached to the western edge of the North America plate. This is thought to be the origin of the curved shape of the Olympic Basaltic Horseshoe, an arc of basalt running east along the Strait of Juan de Fuca, south along Hood Canal, and then west to Lake Quinault.  Powerful tectonic forces fractured, folded, and over-turned rock formations, which helps explain the jumbled appearance of the Olympics. Thrust-faulting northeast into the Vancouver Island/North Cascades corner pushes Olympic rock upward and southwestward, resulting in strata that appear to be standing on edge and that intermix with strata of different mineral composition. All this occurred under water; the Olympics began to rise above the sea only 10-20 million years ago.
The Olympics were shaped in the Pleistocene era by both alpine and continental glaciers. The valleys of the Hoh, Queets, and Quinault rivers are typical U-shaped valleys carved by advancing alpine glaciers. Piles of talus and rockfall were created by retreating alpine glaciers. In the high mountains, the major rivers have their headwaters in alpine glacially carved cirques. The vast continental Cordilleran ice sheet descended from Alaska south through British Columbia to the Olympics. The ice split into the Juan de Fuca and Puget ice lobes, as they encountered the resistant Olympic Mountains, carving out the current waterways. Ice flowed up the river valleys as far as 3,800 feet (1,200 m), carrying granitic glacial erratics with it.
A glacial outwash stream surged from the Cordilleran ice sheet around the southern end of the peninsula to the Pacific Ocean. This isolated the Olympic Peninsula from the nearby Cascade Mountains and limited species from entering and exiting the peninsula. When the ice sheet reached the Peninsula, large areas of the continental shelf were also exposed by the lower sea levels since so much water was trapped as ice. This created a coastal refuge. The distance from Mount Olympus to the Pacific Ocean may have been double that of today.
The mountains support a variety of different ecosystems, varying by elevation and relative east-west location, which influences the local climate, primarily precipitation.
Olympic forests are coniferous forests, unique among mesic temerpate forests in their almost complete dominance by conifers rather than by hardwoods. The hardwood:conifer timber volume ratio is 1:1,000 in the maritime Pacific Northwest. Another unique feature of Olympic forests is the size and longevity of the dominant tree species. Every coniferous genus represented here is represented by its largest and longest-lived species, and some of its second and third ranked species as well. Biomass accumulations are among the highest in the temperate forest zones. Dominance of conifers is thought to be a result of the amount and timing of precipitation. The dry summers limit the growth of deciduous trees, such as most hardwoods. Evergreens, such as most conifers, are able to take advantage of the winter precipitation by continuing to photosynthesize through fall, winter and early spring, when deciduous trees are not able to photosynthesize. No deciduous conifers occur in the Olympics; larch trees occur in the much-drier eastern Cascades, but not in the Olympics or western Cascades. There is only one species of evergreen hardwood, the madrone. The great size and age of conifers here is thought to be a result of the relative lack of frequent windstorms compared to Asian cyclones and typhoons, or eastern American hurricanes.
Along the western flanks of the mountains the increased orographic precipitation supports temperate rain forests in the Quinault, Queets, Hoh, and Bogachiel river valleys at low elevations. Protection by Olympic National Park, has allowed these rain forests to retain old growth trees, which supports a varied ecosystem. The Olympic rain forests are composed primarily of Sitka Spruce and Western Hemlock, as are the surrounding lowland Sitka Spruce forests, but are distinct in having a relative abundance of groves of Bigleaf maple and Vine maple, which support large epiphytic communities of mosses, lichens, ferns, and clubmosses; an abundance of nurse logs on the forest floor; a relatively open forest canopy and sparse shrub layer; and a dense moss layer on the forest floor. The rain forests are the wintering grounds for herds of Roosevelt elk and it is thought that browsing by the elk is responsible for the open shrub layer and the dominance of Sitka spruce over Western hemlock.
The rain forests are just one type of forest found in the Olympic Mountains. Franklin and Dyrness  set out 5 forest zones: Sitka spruce, Western hemlock, Silver fir, Mountain hemlock, and Subalpine parkland. Other authors include a sixth, Douglas-fir zone. Different plant associations are typical of one or more forest zones. For instance, the rain forest plant association described above is a member of the Sitka spruce forest zone.
The Sitka spruce zone is a lowland zone dominated by Sitka spruce and Western hemlock. Precipitation is high, winters are mild, elevations are low. This forest zone is typically found at very low elevations on the western coastal plain and not in mountainous areas, although it can be found as high as 1,900 feet (580 m).
The lower elevations of the Olympic mountains, from roughly 480 feet (150 m) up to 1,800 feet (550 m) - 3,700 feet (1,100 m), feature the Western hemlock zone, so-called because in most of the zone, the climax tree species would be Western hemlock, even though much of the area is dominated by Douglas-fir. The reason for this is that Douglas-fir is an early seral species, and reproduces primarily after disturbances such as fire, logging, landslides, and windstorms. Western hemlock does not reproduce well on disturbed, exposed soil but germinates under the canopy of Douglas-fir, eventually overtaking the forest by shading out the Douglas-fir, which cannot reproduce in shade. In this zone, despite the high annual precipitation, drought stress in summer is sufficiently severe to limit growth of many species, such as Sitka spruce. Hardwoods such as Bigleaf maple, willows, and Red alder are limited to disturbed sites and riparian areas. Red-cedar grows in the wettest sites. A very small area of the northeastern rain shadow contains the limited Douglas-fir zone, where it is too dry for Western hemlock.
Moving up in elevation and moisture availability is the Silver fir zone, up to about 3,900 feet (1,200 m). This zone gets more precipitation, and more of it as snow, than the lower, warmer, drier Western hemlock zone. The cold and the snowpack combine to limit growth of lower-elevation plants. On the other hand, Silver fir is less drought tolerant and less fire tolerant than either Douglas-fir or Western hemlock. Slide alder (Alnus viridis sinuata) grows in snow-creep areas and avalanche chutes, along with Yellow-cedar. Meadows of Thimbleberry also grow in this zone, often intergrading between the Slide alder chutes and the Silver fir forest.
The next higher forest zone is the Mountain hemlock zone, the highest forest zone in the Olympic mountains. In this zone most precipitation falls as snow and the snow-free growing season is very short. In the drier rainshadow side of the mountains, Mountain hemlock is largely replaced by Subalpine fir. At the higher elevations of the Mountain hemlock/Subalpine fir zone, tree cover is reduced to isolated stands of trees called tree islands, surrounded by subalpine meadows, in the Subalpine Parkland zone. Variations in substrate, topography, moisture, and snowpack depth and duration determine the vegetation community. Tree islands form on convex topography, which tends to gather less snow and shed it sooner than surrounding level or concave topography.
In the West, the subalpine zone is dominated by mountain hemlock. It occurs along with subalpine fir from 1,100 to 1,650 metres (3,600 to 5,410 ft) in the Bailey Range; however, the range of this forest type is not extensive and does not extend much west of Mount Olympus, nor is it common in the East. Chamaecyparis nootkatensis|Yellow-cedar is sometimes found in relation to these plants. In the East and other drier areas, the subalpine zone is dominated by Subalpine fir. It can occur with other trees, including Mountain hemlock, Silver fir, and Yellow-cedar, but what characterizes these zones is the dominance of Subalpine fir. These forests occur on the eastern ridges from 1,300 to 1,800 metres (4,300 to 5,900 ft).
In the Olympics, the treeline is between 5,000 feet (1,500 m) and 6,000 feet (1,800 m) but can be as low as under 4,000 feet (1,200 m) in some places. Treeline is a function of both elevation and precipitation, particularly the amount of snow that falls each winter. The growing season for trees is relatively short in the higher elevations of the windward Olympics, compared to similar elevations in other mountain ranges, due to the large accumulations of snow that take a long time to melt each year.
Subalpine meadows in the Olympic mountains are of 5 types. Heath shrub meadows are dominated by ericaceous huckleberries and heathers. Lush herbaceous meadows are typified by Sitka valerian and Showy sedge. Drier areas or those with longer snow cover grow dwarf sedge (Carex nigricans) or grass (Festuca viridis) meadows. Phlox diffusa typifies the low herbaceous meadows of pumice, talus and scree slopes and other rocky areas. American saw-wort is common in both mountain meadows and lower subalpine parklands in the Olympics.
Above timberline is the Alpine zone, not a forest zone since no trees can grow this high. The alpine zone in the Olympics is much more limited in size than in other temperate mountain ranges, from 1,800 metres (5,900 ft) to 2,250 metres (7,380 ft). The high precipitation of the Olympics creates permanent snow and ice at lower elevations than is typical for other mountain ranges, cutting off the alpine vegetation zone. Most of the alpine vegetation is on the rain shadow side, in the northeastern Olympics, where there is less permanent snow and ice. Alpine vegetation is low herbaceous, typified by Phlox diffusa and species of Carex. Many of the Olympic Mountain’s endemic plants occur here, such as Piper’s bellflower (Campanula piperi) and Flett’s violet (Viola flettii).
- Olympic Mountain milkvetch Astragalus australis var. olympicus
- Piper's bellflower Campanula piperi
- Spotted coralroot Corallorhiza maculata var. ozettensis
- Flett's fleabane Erigeron flettii
- Thompson's wandering fleabane Erigeron peregrinus ssp. peregrinus var. thompsonii
- Quinault fawn lily Erythronium quinaultensis
- Olympic rockmat Petrophylum hendersonii
- Olympic Mountain groundsel Senecio neowebsteri
- Olympic cut-leaf synthyris Synthyris pinnatifida var. lanuginosa
- Olympic Mountain dandelion Taraxacum olympicum
- Flett's violet Viola flettii
Mammals extirpated from the Olympic Mountains are the Fisher Martes pennanti and the Gray Wolf Canis lupus. The Fisher was declared extirpated from Washington State when no Fishers were detected during state-wide carnivore surveys in the 1990s and 2000s. A reintroduction project was initiated in 2007, in partnership with Olympic National Park. The Gray Wolf was extirpated from Washington State in the early 20th Century. In the early 21st Century, wolves are naturally migrating back into eastern and north-central Washington State, but there is no evidence of wolf migration into the Olympics and no plan to translocate wolves to the Olympics.
Previous to the extirpation of the Gray Wolf, Coyotes (Canis latrans) occurred in the lowlands of the Olympic peninsula but not in the mountains. With the absence of wolves, coyotes have been moving up into the higher elevations of the mountains and may be responsible for population declines in the Olympic marmot.
The Mountain Goat Oreamnos americanus is not native to the Olympic Mountains but was introduced for hunting in the 1920s. Mountain Goats in the Olympics have been associated with damage to alpine vegetation and soil erosion, and have shown aggression towards people. In 1999, a Mountain Goat gored a hiker at the summit of Mt. Ellinor in Olympic National Forest, and in 2010, a Mountain Goat fatally gored a hiker on the Klahane Ridge trail in Olympic National Park. In 2012, the trail to Mt. Ellinor was closed in summer due to aggressive goats, re-opening in the fall.
Olympic rivers are dominated by Pacific salmonids, the Oncorhynchus. Chinook, coho, pink, rainbow and steelhead, and cutthroat all spawn in Olympic rivers. Chum and sockeye also live in coastal Olympic peninsula rivers but do not reach into the mountains.
- Olympic marmot Marmota olympus
- Olympic chipmunk Tamius amoenus caurinus
- Olympic snow mole Scapanus townsendii olympicus
- Mazama pocket gopher Thomomys mazama melanops
- Olympic ermine Mustela erminea olympica
- Olympic torrent salamander Rhyacotriton olympicus
- Olympic mudminnow Novumbra hubbsi
- Beardslee rainbow trout Oncorhynchus mykiss irideus
- Crescenti cutthroat trout Oncorhynchus clarki clarki
- Hulbert's Skipper butterfly Hesperia comma hulbirti
- Olympic grasshopper Nisquallia olympica
- Mann's gazelle beetle Nebria dammanni
- Quileute gazelle beetle Nebria acuta quileute
- Tiger beetle Cicindela bellissima frechini
- Arionid slug Hemphillia dromedarius
- Arionid jumping slug Hemphillia burringtoni
For the original inhabitants of the Olympic Peninsula, the highest peaks of the mountains were the only refuges during the Great Floods at the beginning of time. For the Elwha Klallam people, that peak was Mount Carrie; for the Skokomish, it was a peak west of Mt. Ellinor. The Thunderbird figure of the Hoh tribe lived on Mt. Olympus, in a den under Blue Glacier. People in the Skokomish, Quinault, and Elwha watersheds regularly traveled into the high country to hunt elk, gather huckleberries and beargrass, and perform spirit quests. Trails across the mountains allowed members of the various tribes to visit and trade with each other.  The cross-Olympic expeditions of the 1890s found tree blazes that they took to mark Indian trails.
Archeological evidence shows that the Olympic Mountains were inhabited by Paleolithic hunters after the retreat of the Cordilleran Ice Sheet.Stone tools in the Deer Park area date to 7600 years ago, prior to the volcanic eruption of Mount Mazama. Similar tools have been found near Lake Cushman and throughout the Olympic subalpine meadows and ridges, as well as in coastal areas. In addition, a fragment of a woven basket found in the Olympic subalpine of Obstruction Point was radiocarbon dated to nearly 3000 years ago.
The mountains were originally called "Sun-a-do" by the Duwamish Indians, while the first European to see them, the Spanish navigator Juan Perez, named Mount Olympus "Santa Rosalia", in 1774. But the English captain John Meares, seeing them in 1788, thought them beautiful enough for the gods to dwell there, and named the highest point "Mount Olympus" after the mountain in Greece. Various names for the mountains were used based on the name Mount Olympus, including the Olympic Range, the Olympian Mountains, and the Olympus Range. Alternate proposals never caught on, and in 1864 the Seattle Weekly Gazette persuaded the government to make the present-day name official, although other names continued to be used.
Though readily visible from many parts of western Washington, especially Seattle, the interior was almost entirely unexplored until 1885, when 2nd Lt. Joseph P. O'Neil of the 14th Infantry, stationed at Fort Vancouver, led a small expedition into the northern Olympics from Port Angeles. O’Neil led an expedition of 3 enlisted men, 2 civilian engineers, and 8 mules out of Port Angeles in July 1885. The expedition cut a mule trail from Port Angeles up to Hurricane Ridge and camped near the current site of the National Park visitor center. From there, they explored and built trail to the east and south, exploring the upper Dungeness and Dosewallips River watersheds, and to Cameron Basin near Mt. Anderson. O’Neil was recalled by the Army in August to be transferred to Fort Leavenworth in Kansas, and the expedition had to return to Fort Townsend. The Obstruction Peak Road and portions of the Hurricane Ridge Road and the Klahane Ridge, Grand Pass and Lost Pass trails in Olympic National Park originated with the mule trails built by this expedition.  
In late 1889, Charles A. Gilman and his son Samuel explored the East Fork Quinault up to its headwaters, but chose to return the way they came rather than cross over the mountains.
The first crossing of the Olympic Mountains was done from November 1889 through May 1890 by the Press Expedition, a group of 5 men lead by Canadian James H. Christie, sponsored by the Seattle newspaper Press, which ascended the Elwha River and descended the North Fork Quinault River. The Press party included 2 mules, which both died in separate incidents, and 4 dogs, 1 of which was killed by an elk. The Press Expedition crossed in winter, in order to beat O'Neil's planned expedition for the summer of 1890. Initially the expedition built a boat on the Elwha to tow their cargo upriver, but the icy water and deep snow covering boulders and fallen trees made this mode of transportation very slow – after 2 weeks, the men had towed the boat 4 miles (6.4 km). It did, however, carry cargo where the mules could not. Christie and his men abandoned the boat and switched to the mules when they reached the head of navigation on the Elwha, but the mules both died in separate incidents fairly early in the expedition. Deep snow, steep slopes, and fallen trees made travel extremely difficult for the mules, along with lack of forage.
The expedition carried minimal food, expecting to find game.  In the lowlands, game and fish were plentiful, but the heavy snow that winter drove game out of the mountains and for long stretches in the high mountains, the men were reduced to eating ‘flour soup’. Unlike O’Neil’s military expeditions, the Press Expedition had no resupply line. Once into the high mountains and the deep snow, with no game, they went weeks with no meat and little to eat besides flour and beans. The men carried all the cargo on their own backs through one of the roughest and most labyrinthine sections of the high mountains, through snow 10 to 15 feet (3.0 to 4.6 m) deep. On climbing a peak to get a view of the area, Christie estimated the snow at the peak to be 25 feet (7.6 m) deep. Avalanches occurred on a daily basis. Crossing Low Divide between the upper Elwha and the headwaters of the North Fork Quinault, the men climbed a vertical cliff, requiring Christie to climb to a ledge and then lower a rope to the men below. Packs, dogs, and men were hauled up the cliff by rope. Once on the Quinault side of the divide, the men shot and ate a bear, the first meat they had had for several weeks of strenuous winter mountain travel. 
Deep snow prevented proper trail building for much of their route, although they did cut a rough trail along the lower reach of the Elwha River, and blazed trees along their route.  They used elk trails wherever possible, and walked in the river when there was no other way through due to steep terrain or dense brush. It took the expedition four months of slogging through dense brush and windthrows, swamps, steep canyons and deep, wet, slushy snow just to reach the inner mountains. Once in the high mountains, the relief was so precipitous that the men estimated they traveled up and down as much as 6 miles (9.7 km) to cover 2 miles (3.2 km) horizontal miles. 
Once on the mainstem Quinault River, the men built a raft, but it wrecked on a logjam.  The men saved the dogs and the one pack that contained their maps, photographs, and records made along the route, but lost all their food, armaments, utensils, fishing tackle, shelter, and the few mineral and plant specimens and animal skins they had collected; and the men were split on opposite sides of the river, unable to reach each other. They continued walking down the river, eating salmonberry shoots and spruce bark, until a settler and a Quinault Indian guide canoeing to Lake Quinault rescued them. When the O’Neil expedition of 1890 reached the mainstem Quinault River a few months later, they found some of the items the Press Expedition had lost in the wreck. The settler and neighboring Indians took the expedition across Lake Quinault and down the lower river to the coast in mid May, nearly six months after they left Port Angeles.  From the mouth of the Quinault they traveled to Aberdeen and then to Seattle. Their account of their expedition, along with photographs and a full-page map, was printed in a special edition of the Press on July 16, 1890. The Elwha River and North Fork Quinault trails in Olympic National Park follow the route of the Press Expedition, with a detour through the highest mountains and around the vertical cliff at Low Divide.
O'Neil returned to Washington in 1887 and started planning another expedition.  The Olympic Exploring Expedition, led by O’Neil, crossed the southern Olympics in the summer of 1890, ascending the North Fork Skokomish River and descending the East Fork Quinault River, building a mule trail the entire distance. This expedition was larger than the 1885 expedition, and would be resupplied by mule train from Hoodsport on Hood Canal, allowing time for scientific exploration of the area. The expedition consisted of 10 soldiers, 1 civilian mule packer, 4 civilian scientists from the Oregon Alpine Club, 11 mules, 1 bell mare to lead the mule train, and up to 4 dogs. The scientists collected specimens of plants, animals, and minerals, which they shipped back to Portland by way of the mule train to Hoodsport. The majority of the party was assigned to cutting the mule trail, while 2 or 3 man exploring parties fanned out and scouts went ahead. The scouts and side exploring parties scrambled up slopes on all fours, pulling themselves up by grabbing onto vegetation; descended similar slopes by sliding, deliberately or inadvertently; hacked and crawled through dense brush and windthrow; waded up rivers and streams when there was no other way through; felled trees to bridge ravines and rivers; and traversed narrow ridges of crumbling vertically-oriented shale. Hornet and yellow jacket wasp attacks were a daily occurrence, sending men scrambling and mules stampeding, one over a cliff to her death. Where the men crossed swamps, devils club thorns impaled the men and broke off in their skin, creating painful inflammations. 
Once camped in the central mountains, O’Neil sent out small exploring parties to the Duckabush, Dosewallips, South Fork Skokomish, Wynoochee and Humptulips rivers, and to Mount Olympus and the Queets River. One party of 3 men climbed what they thought was Mount Olympus but was in reality one of the neighboring peaks, Athena II. A fourth member of the summit party became separated on the climb and ended up descending the Queets River alone, and was taken in by a Quinault Indian family. They were reluctant to believe that he had crossed the Olympics, not believing it was possible to do so; but they accepted his story when he was able to point out reference points on a map. (Many members of this expedition spoke Chinook jargon.) From their settlement, he was able to rejoin the expedition in Hoquiam. O'Neil's reports on his explorations resulted in his recommendation that the region be declared a national park.
Mount Olympus itself was not ascended until 1907, one of the first successes of The Mountaineers, which had been organized in Seattle just a few years earlier. A number of the more obscure and least-accessible peaks in the range were not ascended until the 1970s.
President Grover Cleveland protected the forests of the Olympic Peninsula with the Olympic Forest Reserve in 1897. The Olympic National Forest was established in 1907. The Mount Olympus National Monument was proclaimed by Theodore Roosevelt in 1909, and made into a park in 1938. In 1953, the park was enlarged, and the wilderness was established in 1988.
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- Park History
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- Early Explorations
- The Mountaineers Collection Photographic albums and text documenting the Mountaineers official annual outings undertaken by club members from 1907–1951, primarily on the Olympic Peninsula. Includes 7 Mt. Olympus albums (ca. 1905-1951).