double summit
A double summit, double peak, twin summit, or twin peak refers to a mountain or hill that has two summits, separated by a col or saddle.
One well-known double summit is Austria’s highest mountain, the Großglockner, where the main summit of t ...
mountain located in the
Chugach Mountains
The Chugach Mountains of southern Alaska are the northernmost of the several mountain ranges that make up the Pacific Coast Ranges of the western edge of North America. The range is about long and wide, and extends from the Knik and Turnagain ...
Alaska
Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., ...
Anchorage
Anchorage () is the largest city in the U.S. state of Alaska by population. With a population of 291,247 in 2020, it contains nearly 40% of the state's population. The Anchorage metropolitan area, which includes Anchorage and the neighboring Ma ...
Eklutna Lake
Eklutna Lake ( Dena'ina: ''Idlu Bena'') is a lake in the Municipality of Anchorage, Alaska, near the village of Eklutna.Pioneer Peak, to the northeast. Twin Peaks' descriptive name was reported by the
United States Geological Survey
The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, ...
in 1960, but the mountain was originally known as Lach Q'a in the Denaʼina language. Climbing the mountain involves scrambling with dangerous loose rock. The trailhead for the Twin Peaks Trail is located at the end of Eklutna Lake Road near the boat launch; however, the trail ends far short of the summit.
Climate
Based on the
Köppen climate classification
The Köppen climate classification is one of the most widely used climate classification systems. It was first published by German-Russian climatologist Wladimir Köppen (1846–1940) in 1884, with several later modifications by Köppen, notabl ...
, Twin Peaks are located in a
subarctic climate
The subarctic climate (also called subpolar climate, or boreal climate) is a climate with long, cold (often very cold) winters, and short, warm to cool summers. It is found on large landmasses, often away from the moderating effects of an ocean, ge ...
zone with long, cold, snowy winters, and mild summers. Temperatures can drop below −20 °C with wind chill factors below −30 °C. Precipitation
runoff
Runoff, run-off or RUNOFF may refer to:
* RUNOFF, the first computer text-formatting program
* Runoff or run-off, another name for bleed, printing that lies beyond the edges to which a printed sheet is trimmed
* Runoff or run-off, a stock market ...
from the peak drains into tributaries of the
Knik River
The Knik River ( Dena'ina: ''Skitnu''; Ahtna: ''Scitna’'') is a 25-mile-long (40 km) river in the U.S. state of Alaska. Its source is at Knik Glacier, from which it flows northwest and west and empties into the head of Cook Inlet's Kn ...
Geology of Alaska
The geology of Alaska includes Precambrian igneous and metamorphic rocks formed in offshore terranes and added to the western margin of North America from the Paleozoic through modern times. The region was submerged for much of the Paleozoic and M ...
References
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Gallery
Twin Peaks and Goat Rock.jpg, Left to right: Goat Rock, West Twin, East Twin
File:East Twin Peak.jpg, East Twin Peak
File:Twin Peaks From Reflections Lake - Palmer, Alaska.jpg, From the northwest at Reflections Lake
Twin Peaks from the second bench (3200123041).jpg, Twin Peaks from end of the trail
Rail bridge over Knik River.jpg, From bridge over Knik River