double summit
Double, The Double or Dubble may refer to:
Mathematics and computing
* Multiplication by 2
* Double precision, a floating-point representation of numbers that is typically 64 bits in length
* A double number of the form x+yj, where j^2=+1
* A ...
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 Turnag ...
, in
Matanuska-Susitna Borough
Matanuska-Susitna Borough (often referred to as the Mat-Su Borough) is a borough located in the U.S. state of Alaska. Its borough seat is Palmer, and the largest community is the census-designated place of Knik-Fairview. As of the 2020 census ...
in the
U.S. state
In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its so ...
of
Alaska
Alaska ( ) is a non-contiguous U.S. state on the northwest extremity of North America. Part of the Western United States region, it is one of the two non-contiguous U.S. states, alongside Hawaii. Alaska is also considered to be the north ...
. The mountain is situated in
Chugach State Park
Chugach State Park covers 495,204 acres (2,004 square kilometers) covering a hilly region immediately east of Anchorage, in south-central Alaska.
Established by legislation signed into law on August 6, 1970, by Alaska Governor Keith Harvey Mi ...
, northeast of downtown
Anchorage
Anchorage, officially the Municipality of Anchorage, is the most populous city in the U.S. state of Alaska. With a population of 291,247 at the 2020 census, it contains nearly 40 percent of the state's population. The Anchorage metropolita ...
, south of
Palmer
Palmer may refer to:
People and fictional characters
* Palmer (pilgrim), a medieval European pilgrim to the Holy Land
* Palmer (given name), including a list of people and fictional characters
* Palmer (surname), including a list of people and f ...
, and north of
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), founded as the Geological Survey, is an agency of the U.S. Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on Mar ...
in 1960, but the mountain was originally known as Lach Q'a in the
Denaʼina language
Denaʼina , also Tanaina, is the Athabaskan language of the region surrounding Cook Inlet. It is geographically unique in Alaska as the only Alaska Athabaskan language to include territory which borders salt water. Four dialects are usually ...
. Climbing the mountain involves
scrambling
Scrambling is a mountaineering term for ascending steep terrain using one's hands to assist in holds and balance.''New Oxford American Dictionary''. It can be described as being between hiking and climbing, rock climbing. "A scramble" is a relat ...
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 divides Earth climates into five main climate groups, with each group being divided based on patterns of seasonal precipitation and temperature. The five main groups are ''A'' (tropical), ''B'' (arid), ''C'' (te ...
, Twin Peaks are located in a
subarctic climate
The subarctic climate (also called subpolar climate, or boreal climate) is a continental 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 ...
zone with long, cold, snowy winters, and mild summers. Temperatures can drop below −20 °C with wind chill factors below −30 °C. Precipitation runoff from the peak drains into tributaries of the
Knik River
The Knik River ( Dena'ina: ''Skitnu''; Ahtna: ''Scitna’'') is a 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 Knik Arm, near the mouth o ...
.
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
File:Chugach Mountains - Twin Peaks.jpg, Northwest aspect
Rail bridge over Knik River.jpg, From bridge over Knik River
See also
*
List of mountain peaks of Alaska
This article comprises three sortable tables of major mountain peaks of the U.S. State of Alaska.
The summit of a mountain or hill may be measured in three principal ways:
#The topographic elevation of a summit measures the height of the summi ...
*
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 ...