Lost Peak is a 6,515-foot-elevation (1,986 meter) mountain summit located within Olympic National Park in Jefferson County of Washington state. Part of the Olympic Mountains, Lost Peak is situated immediately northeast of Lost Pass, and is set within the Daniel J. Evans Wilderness. Precipitation runoff from the mountain drains east into the Dosewallips River, and west into headwaters of the Lost River. Neighbors include line parent Mount Cameron, 0.8 mi (1.3 km) to the north, along with Mount Fromme and Mount Claywood, both 1.8 mi (2.9 km) to the southwest. Topographic relief is significant as the southeast aspect rises 2,500 feet (762 meters) above the Dosewallips River in approximately one mile. This landform's name has been officially adopted by the U.S. Board on Geographic Names.[4] The origin of the "Lost" name is unknown, but a park ranger once described the river area as a "good place to get lost" because of the confusing and difficult travel.[5]

Lost Peak
Northwest aspect
Highest point
Elevation	6,515 ft (1,986 m)[1]
Prominence	355 ft (108 m)[2]
Parent peak	Mount Cameron (7,190 ft)[3]
Isolation	0.83 mi (1.34 km)[3]
Coordinates	47°48′50″N 123°20′13″W[4]
Geography
Lost Peak Location of Lost Peak in Washington Show map of Washington (state) Lost Peak Lost Peak (the United States) Show map of the United States
Location	Olympic National Park Jefferson County, Washington, US
Parent range	Olympic Mountains
Topo map	USGS Wellesley Peak
Geology
Age of rock	Eocene
Climbing
Easiest route	class 2[3] via Lost Pass[2]

Climate

Based on the Köppen climate classification, Lost Peak is located in the marine west coast climate zone of western North America.[6] Most weather fronts originate in the Pacific Ocean, and travel east toward the Olympic Mountains. As fronts approach, they are forced upward by the peaks of the Olympic Range, causing them to drop their moisture in the form of rain or snowfall (Orographic lift). As a result, the Olympics experience high precipitation, especially during the winter months. During winter months, weather is usually cloudy, but due to high pressure systems over the Pacific Ocean that intensify during summer months, there is often little or no cloud cover during the summer. The months June through September offer the most favorable weather for viewing or climbing this mountain.[2]

Geology

The Olympic Mountains are composed of obducted clastic wedge material and oceanic crust, primarily Eocene sandstone, turbidite, and basaltic oceanic crust.[7] The mountains were sculpted during the Pleistocene era by erosion and glaciers advancing and retreating multiple times.

See also

• Olympic Mountains
• Geology of the Pacific Northwest

References

External links

• "Olympic National Park". National Park Service.
• Weather forecast: Lost Peak