|Wonder Mountain Wilderness|
|Location||Mason County, Washington, USA|
|Nearest city||Lilliwaup, Washington|
|Area||2,349 acres (9.5 km2)|
|Governing body||U.S. Forest Service|
Wonder Mountain Wilderness is a designated wilderness area encompassing Wonder Mountain in the Olympic National Forest on the Olympic Peninsula of Washington in the United States. The wilderness was established in 1984 and comprises 2,349 acres (10 km2). It borders Olympic National Park and is administered by the US Forest Service.
Wonder Mountain Wilderness is roughly triangle-shaped. A high ridge encompasses the southern point of the triangle, rising to the peak of 4,848-foot (1,478 m) Wonder Mountain. Below the summit stands a heavy forest of western hemlock, Douglas fir, and silver fir. Alder, willow, and vine maple grow along McKay Creek and Five Stream, both of which are have their headwaters in the wilderness. Huckleberry and thimbleberry are also common.
There are no trails leading into or through Wonder Mountain Wilderness. Two forest roads that run near the southeast and southwest borders close to motor vehicles in fall and winter to provide protection for wildlife.
See also 
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