Harquahala Mountains viewed from north side following an unusually wet spring. Bright yellow shrubs are Brittle Bush, (Encelia farinosa).
|Elevation||5,681 ft (1,732 m)|
The Harquahala Mountains are the highest mountain range in southwestern Arizona, United States and are located southwest of the towns of Aguila and Wenden. The name originated from a local Native American people "Aha qua hala", which meant "water there is high up". The range is oriented from northeast to southwest and is approximately 32 km long and 20 km at its widest point. At the northeast are two prominent peaks, Eagle Eye Peak and Eagle Eye Mountain. One has a natural opening or bridge through it appearing as an eye high up, and is the namesake for the peaks and Aguila (Spanish for eagle). The highest point, Harquahala Peak, rises to 1,732 meters. Socorro Peak (1,134 m) is at the southwest end of the range.
The very windy summit can be reached via a rough, 4-wheel drive road. This high point was used by the U.S. Army in the 1880s as a heliograph station. Then in 1920 a Smithsonian Astrophysical Observatory was constructed on this summit and operated for five years before being relocated to Table Mountain Observatory, near Wrightwood, California. Its purpose was to study variations in the solar output as a possible factor in climate prediction.
- Burggraaf, Pieter (1996). Harqua Hala Letters, The Story of Arizona’s Forgotten Smithsonian Observatory (PDF). Arizona BLM Cultural Resource Publication. Arizona State Office of the Bureau of Land Management.
- Arizona Atlas and Gazetteer. DeLorme Mapping, Freeport, Maine. ISBN 0-89933-202-1
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