Ingalls Peak is a triple-summit mountain located in the

Alpine Lakes Wilderness The Alpine Lakes Wilderness is a large National Wilderness Preservation System, wilderness area spanning the Central Cascades of Washington (state), Washington state in the United States. The wilderness is located in parts of Wenatchee National ...

, along the common border of

Kittitas County Kittitas County () is a county located in the U.S. state of Washington. At the 2020 census, its population was 44,337. Its county seat and largest city is Ellensburg. The county was created in November 1883 when it was carved out of Yakima Cou ...

and Chelan County, in

Washington Washington most commonly refers to: * George Washington (1732–1799), the first president of the United States * Washington (state), a state in the Pacific Northwest of the United States * Washington, D.C., the capital of the United States ** A ...

state. Ingalls Peak is the highest point in the Teanaway area of the

Wenatchee Mountains The Wenatchee Mountains are a range of mountains in central Washington State, United States of America. A major subrange of the Cascade Range, extending east from the Cascade crest, the Wenatchee Mountains separate the drainage basins of the Y ...

. It is situated west of

Mount Stuart Mount Stuart is a mountain in the Cascade Range, in the U.S. state of Washington (state), Washington. It is the second highest non-volcanic peak in the state, after Bonanza Peak (Washington), Bonanza Peak and seventh-highest overall. Mount Stua ...

, and immediately west of Lake Ingalls, on land managed by

Wenatchee National Forest Wenatchee ( ) is the county seat and most populous city of Chelan County, Washington, United States. The population within the city limits in 2010 was 31,925, and has increased to 35,508 as of 2020. Located in the north-central part of the stat ...

. Its subpeaks are the South Peak () and the East Peak (). Precipitation runoff from the peak drains north into Jack Creek, a tributary of

Icicle Creek Icicle Creek is a non navigable stream in the U.S. state of Washington (U.S. state), Washington. It originates at Josephine Lake near the crest of the Cascade Range and flows generally east to join the Wenatchee River near Leavenworth, Washington ...

; west into Fortune Creek; or east into Ingalls Creek, a tributary of the

Wenatchee River The Wenatchee River is a river in the U.S. state of Washington, originating at Lake Wenatchee and flowing southeast for , emptying into the Columbia River immediately north of Wenatchee, Washington. On its way it passes the towns of Plain, Le ...

. This peak, the lake, creek, and pass are named for Captain Benjamin Ingalls of the

United States Cavalry The United States Cavalry, or U.S. Cavalry, was the designation of the mounted force of the United States Army. The United States Cavalry was formally created by an act of United States Congress, Congress on 3 August 1861 and ceased as a dist ...

who led an 1855 survey of this area and is credited with discovering gold in the region.Barnes, Nathan and Jeremy, ''Alpine Lakes Wilderness: The Complete Hiking Guide'', Mountaineers Books. 2019.

Climbing

Ingalls Peak is a popular climbing destination because of its generally sound

peridotite Peridotite ( ) is a dense, coarse-grained igneous rock consisting mostly of the silicate minerals olivine and pyroxene. Peridotite is ultramafic, as the rock contains less than 45% silica. It is high in magnesium (Mg2+), reflecting the high pr ...

rock and relatively easy access. The North Peak is the highest, and its easiest climbing route is rated by either the Southwest Face or East Ridge. The

first ascent In mountaineering and climbing, a first ascent (abbreviated to FA in climbing guidebook, guide books), is the first successful documented climb to the top of a mountain or the top of a particular climbing route. Early 20th-century mountaineers a ...

was made in 1925 by a party of The Mountaineers. The South Ridge is a popular route, class 5.4 rating. This route was first climbed by Keith Lankin (1921-2010) and Ken Solberg on May 30, 1941. The Southeast Face was first climbed in June 1956 by James “Lex” Alexander Maxwell (1910-2007) and Bob McCall. The South Peak is the easiest ascent, involving only class 3 scrambling. The East Peak is a classic

horn Horn may refer to: Common uses * Horn (acoustic), a tapered sound guide ** Horn antenna ** Horn loudspeaker ** Vehicle horn ** Train horn *Horn (anatomy), a pointed, bony projection on the head of various animals * Horn (instrument), a family ...

shape, and the most difficult to reach the top, minimum class 5 climbing. This summit was first climbed by Gene Prater, Bill Prater, and Stan Butcharc in November 1952. There are established routes on the South Face, Southwest Face, and Dike Chimney - East Ridge.

Climate

Lying east of the

Cascade Cascade, or Cascading may refer to: Science and technology Science * Air shower (physics), a cascade (particle shower) of subatomic particles and ionized nuclei ** Particle shower, a cascade of secondary particles produced as the result of a high ...

crest, the area around Ingalls Peak is a bit drier than areas to the west. Summers can bring warm temperatures and occasional thunderstorms.

Weather front A weather front is a boundary separating air masses for which several characteristics differ, such as air density, wind, temperature, and humidity. Disturbed and unstable weather due to these differences often arises along the boundary. For ins ...

s originating in the Pacific Ocean travel east toward the

Cascade Mountains The Cascade Range or Cascades is a major mountain range of western North America, extending from southern British Columbia through Washington and Oregon to Northern California. It includes both non-volcanic mountains, such as many of those in the ...

. As fronts approach, they are forced upward by the peaks of the Cascade Range, causing them to drop their moisture in the form of rain or snow onto the Cascades (

Orographic lift Orographic lift occurs when an air mass is forced from a low elevation to a higher elevation as it moves over rising terrain. As the air mass gains altitude it quickly cools down adiabatically, which can raise the relative humidity to 100% and cr ...

). As a result, the western slopes of the Cascades experience high precipitation, especially during the winter months in the form of snowfall. 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.Beckey, Fred W. Cascade Alpine Guide, Climbing and High Routes. Seattle, WA: Mountaineers Books, 2008.

Geology

The Alpine Lakes Wilderness features some of the most rugged topography in the

Cascade Range The Cascade Range or Cascades is a major mountain range of western North America, extending from southern British Columbia through Washington (state), Washington and Oregon to Northern California. It includes both non-volcanic mountains, such as m ...

with craggy peaks and ridges, deep

glacial valley U-shaped valleys, also called trough valleys or glacial troughs, are formed by the process of glaciation. They are characteristic of mountain glaciation in particular. They have a characteristic U shape in cross-section, with steep, straight s ...

s, and

granite Granite ( ) is a coarse-grained (phanerite, phaneritic) intrusive rock, intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly coo ...

walls spotted with over 700 mountain lakes. Geological events occurring many years ago created the diverse topography and drastic elevation changes over the Cascade Range leading to the various climate differences. The history of the formation of the Cascade Mountains dates back millions of years ago to the late

Eocene The Eocene ( ) is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene'' comes ...

Epoch. With the North American Plate overriding the Pacific Plate, episodes of volcanic igneous activity persisted. In addition, small fragments of the

oceanic Oceanic may refer to: *Of or relating to the ocean *Of or relating to Oceania **Oceanic climate **Oceanic languages **Oceanic person or people, also called "Pacific Islander(s)" Places * Oceanic, British Columbia, a settlement on Smith Island, ...

and

continental lithosphere A lithosphere () is the rigid, outermost rocky shell of a terrestrial planet or natural satellite. On Earth, it is composed of the crust and the lithospheric mantle, the topmost portion of the upper mantle that behaves elastically on time sc ...

called

terrane In geology, a terrane (; in full, a tectonostratigraphic terrane) is a crust fragment formed on a tectonic plate (or broken off from it) and accreted or " sutured" to crust lying on another plate. The crustal block or fragment preserves its d ...

s created the

North Cascades The North Cascades are a section of the Cascade Range of western North America. They span the border between the Provinces and territories of Canada, Canadian province of British Columbia and the U.S. state of Washington (state), Washington and ...

about 50 million years ago. During the

Pleistocene The Pleistocene ( ; referred to colloquially as the ''ice age, Ice Age'') is the geological epoch (geology), epoch that lasted from to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fin ...

period dating back over two million years ago, glaciation advancing and retreating repeatedly scoured the landscape leaving deposits of rock debris. The last glacial retreat in the Alpine Lakes area began about 14,000 years ago and was north of the Canada–US border by 10,000 years ago. The U-shaped cross section of the river valleys is a result of that 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 Alpine Lakes Wilderness area.

Gallery

File:Ingalls east peak.jpg, East Peak centered (North Peak left) File:Ingalls Peak from Fortune.jpg, South Peak from SSW on Fortune Peak File:Ingalls Peak 7795.JPG, From the southeast File:Alpine Lakes Wilderness-Okanogan Wenatchee (25392047211).jpg, Ingalls Peak and Lake Ingalls File:Ingalls Peak.jpg, Ingalls Peak File:Stuart, Scatter, Ingalls.png, Mt. Stuart, Scatter Peak, Ingalls Peak (right of center) from northwest

References

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External links