Twin Needles
Twin Needles | |
---|---|
Highest point | |
Elevation | 7,936 ft (2,419 m)[1] |
Prominence | 576 ft (176 m)[1] |
Parent peak | Mount Terror (8,151 ft)[2] |
Isolation | 0.62 mi (1.00 km)[2] |
Coordinates | 48°46′36″N 121°18′45″W / 48.77667°N 121.31250°W[1] |
Geography | |
Location | class 4 Mountaineering[2] |
Twin Needles are a pair of 7,936-foot (2,419-metre) and 7,840+ ft (2,390+ m) spires located in the remote and rugged Picket Range within North Cascades National Park in the state of Washington.[3] The peaks are situated 0.55 mi (0.89 km) west of Mount Terror which is the nearest higher peak. The Mustard Glacier lies on the northern slope of the peaks, and Himmelhorn lies immediately west.[1] The first ascent of Twin Needles was made on August 17, 1932, by William Degenhardt, James Martin, and Herb Strandberg.[4] Twin Needles can be seen from the 100 meter Sterling Munro Trail located behind the park's Newhalem Visitor Center.
Climate
Twin Needles is located in the
Geology
The North Cascades features some of the most rugged topography in the
The history of the formation of the Cascade Mountains dates back millions of years ago to the late
During the Pleistocene period dating back over two million years ago, glaciation advancing and retreating repeatedly scoured the landscape leaving deposits of rock debris.[5] The U-shaped cross section of the river valleys is a result of recent glaciation. Uplift and faulting in combination with glaciation have been the dominant processes which have created the tall peaks and deep valleys of the North Cascades area.
See also
References
- ^ a b c d "West Twin Needle, Washington". Peakbagger.com.
- ^ a b c "Twin Needles, West - 7,936' WA". listsofjohn.com. Retrieved 2020-08-03.
- ^ "Twin Needles". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ a b c d Beckey, Fred W. Cascade Alpine Guide, Climbing and High Routes. Seattle, WA: Mountaineers Books, 2008.
- ^ a b c d Kruckeberg, Arthur (1991). The Natural History of Puget Sound Country. University of Washington Press.
External links
- Twin Needles aerial photo: PBase
- North Cascades National Park National Park Service