| Mount Henderson | |
|---|---|
 Mt. Henderson (left) and Mt. Skokomish (right) seen from the south at Mt. Gladys | |
| Highest point | |
| Elevation | 6,003 ft (1,830 m)[1] |
| Prominence | 323 ft (98 m)[1] |
| Parent peak | Mount Skokomish (6,434 ft)[2] |
| Isolation | 0.91 mi (1.46 km)[2] |
| Coordinates | 47°35′13″N123°18′46″W / 47.587027°N 123.312683°W /47.587027; -123.312683[1] |
| Geography | |
  Mount Henderson Location of Mount Henderson in Washington Show map of Washington (state) Mount Henderson Mount Henderson (the United States) Show map of the United States | |
| Country | United States |
| State | Washington |
| County | Mason |
| Protected area | Mount Skokomish Wilderness Olympic National Park |
| Parent range | Olympic Mountains |
| Topo map | USGSMount Skokomish |
| Geology | |
| Rock age | Eocene |
| Climbing | |
| Easiest route | Hiking via Mt. Gladys[3] |
Mount Henderson is a 6,003-foot-elevation (1,830-meter) mountainsummit located in theOlympic Mountains, inMason County ofWashington state, United States.[4] It is situated on the shared boundary ofOlympic National Park withMount Skokomish Wilderness. Its nearest higher neighbor isMount Skokomish, 0.91 mi (1.46 km) to the east-northeast.[1] Precipitationrunoff from the mountain drains into theHamma Hamma River andSkokomish River. The mountain's toponym honorsLouis Forniquet Henderson (1853-1942), a pioneering botanist and mountaineer who accompanied Lieutenant O'Neil on his1890 expedition into the Olympic Mountains.[5]
Mount Henderson is located in themarine west coast climate zone of westernNorth America.[6]Weather fronts originating in the Pacific Ocean travel northeast toward the Olympic Mountains. As fronts approach, they are forced upward by the peaks (orographic lift), causing them to drop their moisture in the form of rain or snow. As a result, the Olympics experience high precipitation, especially during the winter months in the form of snowfall.[7] Because ofmaritime influence, snow tends to be wet and heavy, resulting inavalanche danger. 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.[7]
The Olympic Mountains are composed ofobductedclastic wedge material and oceanic crust, primarilyEocenesandstone,turbidite, andbasaltic oceanic crust.[8] The mountains were sculpted during thePleistocene era by erosion and glaciers advancing and retreating multiple times.
