Tree climbing

Tree climbing is a recreational activity consisting of ascending and moving around in the crown of trees.

Free solo climbing (not recommended given the inherent risk of falling)

Use of a rope, helmet, and harness are the minimum requirements to ensure the safety of the climber. Other equipment can also be used depending on the experience and skill of the tree climber. Some tree climbers take special hammocks called "Treeboats" and Portaledges with them into the tree canopies where they can enjoy a picnic or nap, or spend the night.

Tree climbing is an "on rope" activity that employs a mixture of techniques and gear principally derived from rock climbing and caving. These techniques are also used to climb trees for other purposes: tree care (arborists), animal rescue, research, and activism.

History

Children commonly climb trees for play without the use of equipment.

Professional arborists have been climbing trees since the late 19th century in North America.

Tree climbing as an organized recreational activity using modern climbing equipment emerged in the early 1980s in USA. In 1983, Peter "Treeman" Jenkins, an active arborist and retired rock climber, founded Tree Climbers International, Inc. and opened the world's first tree climbing school in Atlanta, Georgia USA. TCI eventually developed written safety and training rules for tree climbing which are used to this day. Now there are numerous organizations promote tree climbing around the world (Japan, USA, France, UK, Canada, Taiwan, Australia, Indonesia, China etc.).

Technique

Many different techniques are used to climb trees depending on the climber's individual style, purpose, and preferences. Generally though, climbing is performed by lapping a long rope over a limb and ascending the fallen end using a friction knot tied from initial tie's excess "tail." The difficulty of any particular climb depends on many factors: the regularity of branching, the brittleness of dead wood in some species, whether the bark is rough or smooth, the width of the trunk and branches, the height of the tree, the location of the tree, and the weather are all factors.

The main technique

A woman who has climbed a tree in New York City's Tompkins Square Park.

The main technique of climbing a tree, if the tree allows for it, is free solo climbing, wherein the climber climbs the tree itself without the use of a rope or ladder. For all but very experienced climbers, this type of climbing is not recommended on trees that are particularly tall or difficult to climb, given the inherent risk of falling, but is quite popular among climbers from when they start climbing until they decide to do rope technique.

Other Techniques

Other techniques used are free climbing, self-belayed climbing with a Doubled Rope Technique, Single Rope Technique, and lead climbing. A climber can use several different techniques over the course of a climb, choosing the best method for the moment. The first obstacle is getting into the tree, which may employ techniques of aid climbing such as ascending a fixed rope, ladder or etrier, or else free climbing up limbs or other structures into the tree, but generally it's throwline technique which is used. This is done remotely from the ground utilizing a throw weight and line. The throw weight is a small canvas sack filled with shot and adorned with a ring on one end for attaching a lightweight pilot line. The weight is swung from its attached line like swinging a plumb-bob and then launched toward the targeted branch. Once over the branch the weight returns to the ground and is removed and replaced by the climbing line before being pulled back and into work position. In 1987 SherrillTree patented the Big Shot, a large sling shot mounted on an 8-ft. stick that improved access into tree crowns.

• Doubled Rope Technique (DdRT) is used to self belay the climber in such a way that the rope can be retrieved without going back up the tree. One end of the rope is fastened to the climber's saddle (harness), from there the rope passes around the tree and back to a friction hitch which is also attached to the climber. This system allows the climber to easily adjust the rope to provide a belay if free climbing, or to go up or down if hanging on the rope. As long as there is minimal slack in the system, any fall will be restrained.

• Single Rope Technique (SRT) is used mainly for getting to the top of large trees which cannot be easily free climbed. With the adequate hardware, a throw line, an attached weight, and a launching system (e.g., a bow or slingshot), a climbing rope can be anchored to a branch very high in the tree. This is done by launching the weight (with the throw line attached) over the desired limb and tying the climbing rope to the unweighted end. The climbing rope is then hauled over the branch by pulling on the throw line. The line is anchored to the trunk or to the high limb itself by running one end through a closed bight made in the other end. The climber then ascends the rope using a set of friction hitchs or mechanical ascenders) to obtain the desired limb. With practice this method is typically fastest and requires the least amount of hardware. One drawback is that it does not necessarily involve directly ascending the tree itself, as the vast majority of the time spent climbing is ascending the rope, and not the tree itself. Additionally, it can provide greater safety to a climber over DRT or lead climbing techniques as the climber can rig the rope over multiple limbs when using a ground-level trunk anchor. In the event that one limb breaks, the lower limbs may stop the fall.

• Lead climbing technique is employed by climber where points of protection are formed by girthing the tree's limbs with slings. Once the lead climber ascends the tree, he or she may create a belay or top rope anchor or else simply rappel down. In the event that an anchor is created, other climbers can subsequently climb the tree on belay without having to lead. Drawbacks to this method include the probability of hitting a lower limb or the main trunk in the event of a fall. Due to this risk, climbers typically wear climbing helmets.

See also

• Climbing
• Caving

External links

• Tree Climbers International (TCI) is a worldwide organization of people who love to climb trees.
• Opentreeclimbing.org : the web publishing space on tree climbing
• Global Organization of Tree Climbers
• Tree Climber's Coalition for canopy research, adventure, and education