Devils Thumb (Washington)

Devils Thumb
Devils Thumb
	Devils Thumb seen from Darrington, WA
Highest point
Elevation	5,172 ft (1,576 m)
Prominence	744 ft (227 m)
Parent peak	Devils Peak (5,456 ft)
Isolation	0.83 mi (1.34 km)
Coordinates	48°07′44″N121°32′55″W / 48.128827°N 121.548569°W
Geography
	Devils Thumb Location in Washington Devils Thumb Devils Thumb (the United States)
Country	United States
State	Washington
County	Snohomish
Parent range	Cascade Range
Topo map	USGS Helena Ridge
Climbing
Easiest route	Scrambling

Last updated April 08, 2024

Devils Thumb^[3] is a mountain summit near the western edge of the North Cascades, in Snohomish County of Washington state. It is located 10 miles south of Darrington, Washington and west of Glacier Peak which is one of the Cascade stratovolcanoes. It is situated on land administered by the Mount Baker-Snoqualmie National Forest. The nearest higher peak is Devils Peak, 0.79 miles (1.27 km) to the southwest.^[1] Precipitation runoff from Devils Thumb drains into tributaries of the Sauk River.

Climate

Devils Thumb is located in the marine west coast climate zone of western North America.^[4] Most weather fronts originating in the Pacific Ocean travel northeast toward the Cascade Mountains. As fronts approach the Cascades, they are forced upward by the peaks (orographic lift), causing them to drop their moisture in the form of rain or snowfall onto the Cascades. As a result, the west side of the North Cascades experiences high precipitation, especially during the winter months in the form of snowfall.^[4] Because of maritime influence, snow tends to be wet and heavy, resulting in high avalanche danger.^[4] 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.^[4] Due to its temperate climate and proximity to the Pacific Ocean, areas west of the Cascade Crest very rarely experience temperatures below 0 °F (−18 °C) or above 80 °F (27 °C).^[4]

Geology

The North Cascades features some of the most rugged topography in the Cascade Range with craggy peaks, ridges, and deep glacial valleys. Geological events occurring many years ago created the diverse topography and drastic elevation changes over the Cascade Range leading to the various climate differences. These climate differences lead to vegetation variety defining the ecoregions in this area.

The history of the formation of the Cascade Mountains dates back millions of years ago to the late Eocene Epoch.^[5] With the North American Plate overriding the Pacific Plate, episodes of volcanic igneous activity persisted.^[5] In addition, small fragments of the oceanic and continental lithosphere called terranes created the North Cascades about 50 million years ago.^[5]

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.

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The Needles is an 8,160-foot (2,487-metre) granite mountain located in Okanogan County in Washington state. It is part of the Okanogan Range which is a sub-range of the North Cascades Range. The Needles is situated on land administered by the Okanogan–Wenatchee National Forest. Precipitation runoff from the peak drains into tributaries of the Methow River. Topographic relief is significant as the summit rises 3,660 feet above Pine Creek in approximately 1.25 mile (2 km). The nearest higher neighbor is Tower Mountain, 2.26 miles (3.64 km) to the southwest.

Gilbert Mountain is an 8,023-foot (2,445-metre) massif located in Okanogan County in Washington state. It is part of the Methow Mountains which are a subrange of the North Cascades. The mountain is situated within the Lake Chelan-Sawtooth Wilderness which is managed by Okanogan–Wenatchee National Forest. The northwestern extreme of the Gilbert massif connects to the southern end of Kangaroo Ridge. Precipitation runoff from the mountain drains into the Twisp River. Topographic relief is significant as it rises over 4,000 feet above the river in approximately one mile.

Magic Mountain is a 7,610-foot (2,320-metre) mountain summit located on the shared boundary of Skagit County and Chelan County in Washington state. It is part of the North Cascades, a subset of the Cascade Range. Magic Mountain is situated southeast of Cascade Pass on the shared border of North Cascades National Park and Glacier Peak Wilderness. The nearest peak is Pelton Peak 0.4 miles (0.64 km) to the northeast, and the nearest higher peak is Hurry-up Peak 0.83 miles (1.34 km) to the south. The Yawning Glacier and Cache Col Glacier rest on its northern flank. Magic Mountain is at the northern end of the Ptarmigan Traverse. Surface runoff on the north side the mountain drains into the Stehekin River, while precipitation drains into the Cascade River from the southwest side.

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Sheep Mountain is a 6,166-foot-elevation (1,879-meter) summit near the western edge of the North Cascades, in Snohomish County of Washington state. It is located one mile east of Barlow Pass along the Mountain Loop Highway near the Monte Cristo area. It is situated on land administered by the Mount Baker-Snoqualmie National Forest. Back in the old mining days of the late 1800s, the long sub-range stretching from Cadet Peak to Sheep Mountain was known as Pride of the Mountains Range. Precipitation runoff from the mountain drains into tributaries of the Sauk River.

Diobsud Buttes are summits near the western edge of the North Cascades, in Skagit County of Washington state. It's located north of Marblemount, Washington, and Helen Buttes, along the shared boundary of North Cascades National Park and the Noisy-Diobsud Wilderness. The nearest higher peak is Logger Butte, 0.85 mi (1.37 km) to the north. Precipitation runoff from Diobsud Buttes drains into tributaries of the Skagit River.

Blackbeard Peak, also spelled Black Beard Peak, is a 7,241-foot mountain summit in the North Cascades in the U.S. state of Washington. It is located in the Okanogan–Wenatchee National Forest in Skagit County. It is situated northwest of Rainy Pass, southwest of Porcupine Peak, and southeast of Graybeard Peak. Its nearest higher neighbor is Repulse Peak, 1.06 mi (1.71 km) to the west. Blackbeard Peak can be seen from the North Cascades Highway. Precipitation runoff from Blackbeard Peak drains into Granite Creek, a tributary of the Skagit River. Topographic relief is significant as the summit rises over 3,000 feet above Granite Creek in one mile (1.6 km).

Rainy Peak is a 7,768 ft (2,368 m) summit in the Cascade Range in the U.S. state of Washington. It is located 3 kilometers south of Rainy Pass and one kilometer southeast of Frisco Mountain on the borders of the Stephen Mather Wilderness and North Cascades National Park. Its nearest higher peak is Corteo Peak, 2.33 mi (3.75 km) to the northwest. Precipitation runoff from Rainy Peak drains into Rainy Lake and tributaries of Bridge Creek. The retreating Lyall Glacier in its north cirque contributes to waterfalls which tumble 1,000 ft (300 m) into Rainy Lake.

Crooked Bum is a 6,937-foot-elevation mountain summit on the crest of the North Cascades in the U.S. state of Washington. It is located in the Okanogan–Wenatchee National Forest on the shared border of Skagit County and Chelan County. It is situated immediately west of Rainy Pass and two miles east of Corteo Peak. The scenic and popular Maple Pass Trail traverses the south slope of the peak while staying above Lake Ann. Precipitation runoff from the north slope of Crooked Bum drains into Granite Creek which is a tributary of the Skagit River, whereas the south side drains into Bridge Creek which is a tributary of the Chelan River.

Round Mountain is a 5,369-foot mountain summit at the western edge of the North Cascades, in Skagit County of Washington state. It is located nine miles northwest of Darrington, Washington, and is situated on land administered by the Mount Baker-Snoqualmie National Forest. Round Mountain is remarkable for its 4,840 feet of prominence which ranks as the most in Skagit County, and eighth-most of all the mountains in Washington state. The nearest higher peak is Whitehorse Mountain, 7.85 miles (12.63 km) to the south-southeast. Precipitation runoff from Round Mountain drains into tributaries of the Stillaguamish River.

Glory Mountain is a 7,228-foot (2,203-metre) mountain summit located in the North Cascades Range in Chelan County of Washington state. Glory Mountain is situated southeast of Trapper Lake on the shared border of North Cascades National Park and Glacier Peak Wilderness. The nearest higher peak is Trapper Mountain, 1.72 miles (2.77 km) to the west. Precipitation runoff from the mountain drains into Cottonwood Creek and Flat Creek, both tributaries of the Stehekin River. An unofficially named secondary peak called Halleluja Peak 7,120+ ft lies 0.32 miles (0.51 km) to the west of the summit.

Big Devil Peak is a 7,055-foot-elevation mountain summit located in North Cascades National Park in Skagit County of Washington state. The peak lies midway between Marblemount and Newhalem and can be seen from the North Cascades Highway at the road pullout for Big Devil Falls. The peak rises 6,600+ feet above the valley floor at this viewing location in the valley. Big Devil is the highest peak of Teebone Ridge, and other peaks on this ridge include Little Devil Peak, Fallen Angel, and The Trapezoid. Precipitation runoff from the mountain drains into tributaries of the Skagit River.

Devils Peak is an 8,081-foot (2,463-metre) mountain summit located in western Okanogan County in Washington state. It is part of the Okanogan Range which is a sub-range of the North Cascades Range. The mountain is situated in the Pasayten Wilderness, on land administered by the Okanogan–Wenatchee National Forest. The nearest higher neighbor is Robinson Mountain, 1.88 miles (3.03 km) to the east-southeast, and Slate Peak is set 3.1 miles (5.0 km) to the west. Precipitation runoff from Devils Peak drains west into Robinson Creek, and east into Eureka Creek, which are both part of the Methow River drainage basin.

Jackita Ridge is a prominent 7,350 ft (2,240 m) ridge located in the Pasayten Wilderness, in Whatcom County of Washington state. It is part of the Hozameen Range which is a subset of the North Cascades. The highest point is called Jackita Peak, and the Jackita Ridge Trail traverses below the west aspect of this summit, providing access for an off-trail scramble to the top. The nearest higher neighbor is Crater Mountain, 3.9 miles (6.3 km) to the southwest, Jack Mountain is set 4.77 miles (7.68 km) to the west, and McKay Ridge is 5.7 miles (9.2 km) to the south. Precipitation runoff from this ridge drains to Ross Lake via Devils Creek and Canyon Creek, which are part of the Skagit River drainage basin. The first ascent may have been made in 1926 by the United States Coast and Geodetic Survey, which placed a Jackita benchmark.

Sherman Peak is an 8,204-foot (2,501-metre) mountain summit located in western Okanogan County in Washington state. It is part of the Okanogan Range which is a subset of the North Cascades. This remote mountain is on Isabella Ridge, 10.5 mi (16.9 km) north-northeast of Mazama, on land administered by the Okanogan–Wenatchee National Forest. The nearest higher neighbor is Big Craggy Peak, 2 miles (3.2 km) to the north. Precipitation runoff from Sherman drains into tributaries of the Methow River.

Little Devil Peak is a 6,985-foot-elevation (2,129 m) mountain summit located in Skagit County of Washington state. It is set within North Cascades National Park and Stephen Mather Wilderness, where it is situated 3.1 miles northeast of Lookout Mountain. Little Devil is the second-highest peak of Teebone Ridge, and other peaks on this ridge include line parent Big Devil Peak, Fallen Angel, and The Trapezoid. Precipitation runoff from the mountain drains into tributaries of the Skagit River. Like many North Cascades peaks, it is more notable for its large, steep rise above local terrain than for its absolute elevation. Topographic relief is significant as the south aspect rises 5,400 feet above Marble Creek in three miles, and the east aspect rises 4,200 feet above Newhalem Creek in approximately 1.5 mile.

References

1 2 3 4 "Devils Thumb, Washington". Peakbagger.com.
1 2 "Devils Thumb - 5,172' WA". listsofjohn.com. Retrieved 2021-10-05.
↑ "Devils Thumb". Geographic Names Information System . United States Geological Survey, United States Department of the Interior . Retrieved 2018-07-27.
1 2 3 4 5 Beckey, Fred W. Cascade Alpine Guide, Climbing and High Routes. Seattle, WA: Mountaineers Books, 2008.
1 2 3 4 Kruckeberg, Arthur (1991). The Natural History of Puget Sound Country. University of Washington Press.

External links

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[pb-1] 1 2 3 4 "Devils Thumb, Washington". Peakbagger.com.

[listsofjohn-2] 1 2 "Devils Thumb - 5,172' WA". listsofjohn.com. Retrieved 2021-10-05.

[gnis-3] "Devils Thumb". Geographic Names Information System . United States Geological Survey, United States Department of the Interior . Retrieved 2018-07-27.

[Beckey,_Fred_W_2008-4] 1 2 3 4 5 Beckey, Fred W. Cascade Alpine Guide, Climbing and High Routes. Seattle, WA: Mountaineers Books, 2008.

[Kruckeberg-5] 1 2 3 4 Kruckeberg, Arthur (1991). The Natural History of Puget Sound Country. University of Washington Press.

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