Mount Shasta - wikipedia Mount Shasta This article is about the volcano in California. For the town, see Mount Shasta, California. For other peaks named Shasta, see List of peaks named Shasta. Mount Shasta Aerial view of Mount Shasta from the west Highest point Elevation 14,179 ft ( 4,322 m ) NAVD88 Prominence 9,772 ft ( 2,979 m ) Isolation 335 mi ( 539 km ) Parent peak North Palisade Listing World most prominent peaks 96th North America highest peaks 48th North America prominent peak 18th US most prominent peaks 11th North America isolated peaks 28th US highest major peaks 34th California highest major peaks 5th California fourteeners 5th California county high points 5th Coordinates 41 ° 24 ′ 33 '' N 122 ° 11 ′ 42 '' W ﻿ / ﻿ 41.409196033 ° N 122.194888358 ° W ﻿ / 41.409196033 ; - 122.194888358 Coordinates : 41 ° 24 ′ 33 '' N 122 ° 11 ′ 42 '' W ﻿ / ﻿ 41.409196033 ° N 122.194888358 ° W ﻿ / 41.409196033 ; - 122.194888358 Geography Location Siskiyou County, California Parent range Cascade Range Topo map USGS Mount Shasta Geology Age of rock About 593,000 years Mountain type Stratovolcano Volcanic arc Cascade Volcanic Arc Last eruption 1786 Climbing First ascent 1854 by E.D. Pearce and party Easiest route Avalanche Gulch ( `` John Muir '' ) route : talus / snow climb U.S. National Natural Landmark Designated 1976 Mount Shasta ( Karuk : Úytaahkoo or `` White Mountain '' ) is a potentially active volcano at the southern end of the Cascade Range in Siskiyou County, California. At an elevation of 14,179 feet ( 4321.8 m ), it is the second - highest peak in the Cascades and the fifth - highest in the state. Mount Shasta has an estimated volume of 85 cubic miles ( 350 km ), which makes it the most voluminous stratovolcano in the Cascade Volcanic Arc. The mountain and surrounding area are part of the Shasta -- Trinity National Forest. Contents 1 Description 2 History 2.1 Religion and legends 3 Geology 3.1 Volcanic status 4 Climbing 5 See also 6 References 7 Sources 8 External links Description Mount Shasta is connected to its satellite cone of Shastina, and together they dominate the landscape. Shasta rises abruptly to tower nearly 10,000 feet ( 3,000 m ) above its surroundings. On a clear winter day, the mountain can be seen from the floor of the Central Valley 140 miles ( 230 km ) to the south. The mountain has attracted the attention of poets, authors, and presidents. The mountain consists of four overlapping volcanic cones that have built a complex shape, including the main summit and the prominent satellite cone of 12,330 ft ( 3,760 m ) Shastina, which has a visibly conical form. If Shastina were a separate mountain, it would rank as the fourth - highest peak of the Cascade Range ( after Mount Rainier, Rainier 's Liberty Cap, and Mount Shasta itself ). Mount Shasta 's surface is relatively free of deep glacial erosion except, paradoxically, for its south side where Sargents Ridge runs parallel to the U-shaped Avalanche Gulch. This is the largest glacial valley on the volcano, although it does not now have a glacier in it. There are seven named glaciers on Mount Shasta, with the four largest ( Whitney, Bolam, Hotlum, and Wintun ) radiating down from high on the main summit cone to below 10,000 ft ( 3,000 m ) primarily on the north and east sides. The Whitney Glacier is the longest, and the Hotlum is the most voluminous glacier in the state of California. Three of the smaller named glaciers occupy cirques near and above 11,000 ft ( 3,400 m ) on the south and southeast sides, including the Watkins, Konwakiton, and Mud Creek glaciers. History The oldest - known human settlement in the area dates to about 7,000 years ago. At the time of Euro - American contact in the 1820s, the Native American tribes who lived within view of Mount Shasta included the Shasta, Okwanuchu, Modoc, Achomawi, Atsugewi, Karuk, Klamath, Wintu, and Yana tribes. The historic eruption of Mount Shasta in 1786 may have been observed by Lapérouse, but this is disputed. Although perhaps first seen by Spanish explorers, the first reliably reported land sighting of Mount Shasta by a European or American was by Peter Skene Ogden ( a leader of a Hudson 's Bay Company trapping brigade ) in 1826. In 1827, the name `` Sasty '' or `` Sastise '' was given to nearby Mount McLoughlin by Ogden. The name was transferred to present - day Mount Shasta in 1841, partly as a result of work by the United States Exploring Expedition. Mount Shasta as seen from a small farm south of Weed, California Beginning in the 1820s, Mount Shasta was a prominent landmark along what became known as the Siskiyou Trail, which runs at Mount Shasta 's base. The Siskiyou Trail was on the track of an ancient trade and travel route of Native American footpaths between California 's Central Valley and the Pacific Northwest. The California Gold Rush brought the first Euro - American settlements into the area in the early 1850s, including at Yreka, California and Upper Soda Springs. The first recorded ascent of Mount Shasta occurred in 1854 ( by Elias Pearce ), after several earlier failed attempts. In 1856, the first women ( Harriette Eddy, Mary Campbell McCloud, and their party ) reached the summit. Clarence King exploring the Whitney Glacier in 1870. This was the first glacier in the continental United States discovered and named. It was named for Josiah Whitney, head of the California Geological Survey. By the 1860s and 1870s, Mount Shasta was the subject of scientific and literary interest. A book by California pioneer and entrepreneur James Hutchings, titled Scenes of Wonder and Curiosity in California, contained an account of an early summit trip in 1855. The summit was achieved ( or nearly achieved ) by John Muir, Josiah Whitney, Clarence King, and John Wesley Powell. In 1877, Muir wrote a dramatic popular article about his surviving an overnight blizzard on Mount Shasta by lying in the hot sulfur springs near the summit. This experience was inspiration to Kim Stanley Robinson 's short story `` Muir on Shasta ''. The 1887 completion of the Central Pacific Railroad, built along the line of the Siskiyou Trail between California and Oregon, brought a substantial increase in tourism, lumbering, and population into the area around Mount Shasta. Early resorts and hotels, such as Shasta Springs and Upper Soda Springs, grew up along the Siskiyou Trail around Mount Shasta, catering to these early adventuresome tourists and mountaineers. In the early 20th century, the Pacific Highway followed the track of the Siskiyou Trail to the base of Mount Shasta, leading to still more access to the mountain. Today 's version of the Siskiyou Trail, Interstate 5, brings thousands of people each year to Mount Shasta. From February 13 -- 19, 1959, the Mount Shasta Ski Bowl obtained the record for the most snowfall during one storm in the U.S., with a total of 15.75 feet ( 480 cm ). Mount Shasta was declared a National Natural Landmark in December 1976. Religion and legends Main article : Legends of Mount Shasta Sunrise on Mount Shasta The lore of some of the Klamath Tribes in the area held that Mount Shasta is inhabited by the Spirit of the Above - World, Skell, who descended from heaven to the mountain 's summit at the request of a Klamath chief. Skell fought with Spirit of the Below - World, Llao, who resided at Mount Mazama by throwing hot rocks and lava, probably representing the volcanic eruptions at both mountains. Italian settlers arrived in the early 1900s to work in the mills as stonemasons and established a strong Catholic presence in the area. Many other faiths have been attracted to Mount Shasta over the years -- more than any other Cascade volcano. Mount Shasta City and Dunsmuir, California, small towns near Shasta 's western base, are focal points for many of these, which range from a Buddhist monastery ( Shasta Abbey, founded by Houn Jiyu - Kennett in 1971 ) to modern - day Native American rituals. A group of Native Americans from the McCloud River area practice rituals on the mountain. Mount Shasta has also been a focus for non-Native American legends, centered on a hidden city of advanced beings from the lost continent of Lemuria. The legend grew from an offhand mention of Lemuria in the 1880s, to a description of a hidden Lemurian village in 1925. In 1931, Wisar Spenle Cerve wrote Lemuria : the lost continent of the Pacific, published by the Rosicrucians, about the hidden Lemurians of Mount Shasta that cemented the legend in many readers ' minds. In August 1987, believers in the spiritual significance of the Harmonic Convergence described Mount Shasta as one of a small number of global `` power centers ''. Mount Shasta remains a focus of `` New Age '' attention. Geology Satellite ( Landsat 8 ) view of Mount Shasta About 593,000 years ago, andesitic lavas erupted in what is now Mount Shasta 's western flank near McBride Spring. Over time, an ancestral Mount Shasta stratovolcano was built to a large but unknown height ; sometime between 300,000 and 360,000 years ago the entire north side of the volcano collapsed, creating an enormous landslide or debris avalanche, 6.5 cu mi ( 27 km ) in volume. The slide flowed northwestward into Shasta Valley, where the Shasta River now cuts through the 28 - mile - long ( 45 km ) flow. What remains of the oldest of Mount Shasta 's four cones is exposed at Sargents Ridge on the south side of the mountain. Lavas from the Sargents Ridge vent cover the Everitt Hill shield at Mount Shasta 's southern foot. The last lavas to erupt from the vent were hornblende - pyroxene andesites with a hornblende dacite dome at its summit. Glacial erosion has since modified its shape. The next cone to form is exposed south of Mount Shasta 's current summit and is called Misery Hill. It was formed 15,000 to 20,000 years ago from pyroxene andesite flows and has since been intruded by a hornblende dacite dome. Nearby Black Butte from Weed, California There are many buried glacial scars on the mountain which were created in recent glacial periods ( `` ice ages '' ) of the present Wisconsinian glaciation. Most have since been filled in with andesite lava, pyroclastic flows, and talus from lava domes. Shastina, by comparison, has a fully intact summit crater indicating Shastina developed after the last ice age. Shastina has been built by mostly pyroxene andesite lava flows. Some 9,500 years ago, these flows reached about 6.8 mi ( 10.9 km ) south and 3 mi ( 4.8 km ) north of the area now occupied by nearby Black Butte. The last eruptions formed Shastina 's present summit about a hundred years later. But before that, Shastina, along with the then forming Black Butte dacite plug dome complex to the west, created numerous pyroclastic flows that covered 43 sq mi ( 110 km ), including large parts of what is now Mount Shasta, California and Weed, California. Diller Canyon ( 400 ft ( 120 m ) deep and 0.25 mi ( 400 m ) wide ) is an avalanche chute that was probably carved into Shastina 's western face by these flows. The last to form, and the highest cone, the Hotlum Cone, formed about 8,000 years ago. It is named after the Hotlum glacier on its northern face ; its longest lava flow, the 500 - foot - thick ( 150 - metre ) Military Pass flow, extends 5.5 mi ( 8.9 km ) down its northeast face. Since the creation of the Hotlum Cone, a dacite dome intruded the cone and now forms the summit. The rock at the 600 - foot - wide ( 180 - metre ) summit crater has been extensively hydrothermally altered by sulfurous hot springs and fumaroles there ( only a few examples still remain ). In the last 8,000 years, the Hotlum Cone has erupted at least eight or nine times. About 200 years ago the last significant Mount Shasta eruption came from this cone and created a pyroclastic flow, a hot lahar ( mudflow ), and three cold lahars, which streamed 7.5 mi ( 12.1 km ) down Mount Shasta 's east flank via Ash Creek. A separate hot lahar went 12 mi ( 19 km ) down Mud Creek. This eruption was thought to have been observed by the explorer La Pérouse, from his ship off the California coast, in 1786, but this has been disputed. Volcanic status During the last 10,000 years, Mount Shasta has erupted an average of every 800 years, but in the past 4,500 years the volcano has erupted an average of every 600 years. The last significant eruption on Mount Shasta may have occurred about two centuries ago. Diller Canyon on Shastina from Weed Mount Shasta can release volcanic ash, pyroclastic flows or dacite and andesite lava. Its deposits can be detected under nearby small towns. Mount Shasta has an explosive, eruptive history. There are fumaroles on the mountain, which show Mount Shasta is still alive. The worst - case scenario for an eruption is a large pyroclastic flow, such as what occurred in the 1980 eruption of Mount St. Helens. Since there is ice, such as Whitney Glacier and Mud Creek Glacier, lahars would also result. Ash would probably blow inland, perhaps as far as eastern Nevada. There is a small chance an eruption could result in a collapse of the mountain, as happened when Mount Mazama in Oregon collapsed to form what is now called Crater Lake, but this is of much lower probability. The United States Geological Survey monitors Mount Shasta and rates it as a very high - threat volcano. Climbing Mount Shasta 's west face, June 2009 Many climbers attempt the summit of Mount Shasta. The summer climbing season runs from late April until October, although many attempts are made in the winter. In winter, Sargents Ridge and Casaval Ridge, to the east and west of Avalanche Gulch, respectively, become the most traveled routes, to avoid avalanche danger. Mount Shasta is also a popular destination for backcountry skiing. Many of the climbing routes can be descended by experienced skiers, and there are numerous lower - angled areas around the base of the mountain. The most popular route on Mount Shasta is Avalanche Gulch route, which begins at the Bunny Flat Trailhead and gains about 7,300 feet ( 2,200 m ) of elevation in approximately 11.5 miles ( 18.5 km ) round trip. The crux of this route is considered to be to climb from Lake Helen, at approximately 10,443 feet ( 3,183 m ), to the top of Red Banks. The Red Banks are the most technical portion of the climb, as they are usually full of snow / ice, are very steep, and top out at around 13,000 feet ( 4,000 m ) before the route heads to Misery Hill. The Casaval Ridge route is a steeper, more technical route on the mountain 's southwest ridge best climbed when there 's a lot of snow pack. This route tops out to the left ( north ) of the Red Banks, directly west of Misery Hill. So the final sections involve a trudge up Misery Hill to the summit plateau, similar to the Avalanche Gulch route. Mount Shasta 's west face as seen from Hidden Valley high on the mountain. The west face gulley is an alternate climbing route to the summit. No quota system currently exists for climbing Mount Shasta, and reservations are not required. However, climbers must obtain a summit pass and a wilderness permit to climb the mountain. Permits and passes are available at the ranger station in Mount Shasta and the ranger station in McCloud, or climbers can obtain self - issue permits and passes at any of the trailheads 24 hours a day. See also List of mountain peaks of California List of highest points in California by county List of Ultras of the United States List of volcanoes in the United States Volcanic Legacy Scenic Byway References ^ Jump up to : `` Mount Shasta, California ''. Peakbagger.com. Retrieved January 6, 2016. ^ Jump up to : `` MT SHASTA ''. NGS data sheet. U.S. National Geodetic Survey. Retrieved January 6, 2016. ^ Jump up to : `` Global Volcanism Program - Shasta ''. volcano.si.edu. Retrieved 23 October 2017. ^ Jump up to : Selters, Andy ; Michael Zanger ( 2006 ). The Mount Shasta Book ( 3rd ed. ). Wilderness Press. ISBN 0 - 89997 - 404 - X. Jump up ^ Bright, William ; Susan Gehr. `` Karuk Dictionary and Texts ''. Retrieved 2012 - 07 - 06. Jump up ^ The origin of the name `` Shasta '' is vague, perhaps from Russian ( Чистая, meaning `` white, clean, pure '' or Счастье, meaning `` happiness, luck, fortune, felicity '' ) ; the name might have been given to the mountain by the early Russian settlers in California. Jump up ^ Dan Dzurisin ; Peter H. Stauffer ; James W. Hendley II ; Sara Boore ; Bobbie Myers ; Susan Mayfield ( 1997 ). `` Living with Volcanic Risk in the Cascades '' ( PDF ). USGS. USGS. p. 2. Retrieved 2017 - 03 - 29. Jump up ^ Orr, Elizabeth L. ; William N. Orr ( 1996 ). Geology of the Pacific Northwest. New York : The McGraw - Hill Companies. p. 115. ISBN 0 - 07 - 048018 - 4. Jump up ^ `` Mount Shasta and Vicinity, California ''. USGS. Retrieved 2009 - 10 - 22. Jump up ^ In 1878 the Coast and Geodetic Survey triangulated between heliotropes atop Mount Shasta and Mount St. Helena, 192 miles ( 309 km ) south. Jump up ^ Miller, Joaquin ; Malcolm Margolin ; Alan Rosenus ( January 1996 ) ( 1873 ). Life amongst the Modocs : unwritten history. Berkeley : Urion Press ( distributed by Heyday Books ). ISBN 0 - 930588 - 79 - 7. Jump up ^ Muir, John 1838 - 1914. Letters, 1874 - 1888, of a personal nature, about Mount Shasta. In : Bade, William Frederic. The Life and Letters of John Muir. New York : Houghton Mifflin Co., 1923. Vol. II, pp. 29 - 41, 49 - 50, 82 - 85, 219. Two Volumes. Cited at Mount Shasta Collection MS176 Archived 2008 - 05 - 13 at the Wayback Machine... Retrieved 2008 - 04 - 08. Jump up ^ Roosevelt, Theodore 1858 - 1919. Letter to Harrie Cassie Best, dated Nov. 12, 1908, White House. In : James, George Wharton 1858 - 1923. Harry Cassie Best : Painter of the Yosemite Valley, California Oaks, and California Mountains. 1930 ? p. 18. Cited at Mount Shasta Collection MS1032 Archived 2008 - 05 - 13 at the Wayback Machine... Retrieved 2008 - 04 - 08. Jump up ^ `` Sargents Ridge ''. Geographic Names Information System. United States Geological Survey. Retrieved 2008 - 04 - 19. Jump up ^ `` History ''. College of the Siskiyous. 1989. Retrieved 2010 - 03 - 31. Jump up ^ http://www.siskiyous.edu/library/shasta/documents/upshasta.pdf Jump up ^ `` Archived copy ''. Archived from the original on 2014 - 10 - 06. Retrieved 2014 - 10 - 04. Jump up ^ Scenes of Wonder and Curiosity in California, ( 1862 ) by James M. Hutchings Jump up ^ `` Snow - Storm on Mount Shasta '' ( PDF ). siskiyous.edu. Retrieved 23 October 2017. Jump up ^ `` Sierra Snowfall ''. Welcome to the Storm King. Mic Mac Publishing. 28 January 2011. Jump up ^ `` Mount Shasta ''. NPS : Nature & Science '' National Natural Landmarks. National Park Service. Retrieved 2008 - 04 - 07. Jump up ^ `` History of Crater Lake ''. Oregon Explorer. Retrieved 2012 - 04 - 21. Jump up ^ `` In The Light of Reverence ''. POV. Public Broadcasting Service. ^ Jump up to : `` The Origin of the Lemurian Legend ''. Folklore of Mount Shasta. College of the Siskiyous. Jump up ^ `` Harmonic Convergence ''. College of the Siskiyous. 1989. Retrieved 2010 - 03 - 31. Jump up ^ `` Legends : Ascended Masters ''. College of the Siskiyous. 1989. Retrieved 2010 - 03 - 31. Jump up ^ Sigurdsson, Haraldur ( 2001 ). Encyclopedia of Volcanoes. Academic Press. ISBN 0 - 12 - 643140 - X. Jump up ^ http://www.siskiyous.edu/shasta/his/ Jump up ^ Program, Volcano Hazards. `` USGS : Volcano Hazards Program CalVO Mount Shasta ''. volcanoes.usgs.gov. Retrieved 23 October 2017. Jump up ^ `` An Assessment of Volcanic Threat and Monitoring Capabilities in the United States : NVEWS Framework for a National Volcano Early Warning System '' ( PDF ). USGS. 2005. Jump up ^ `` Avalanche Gulch ''. Geographic Names Information System. United States Geological Survey. Retrieved 2008 - 04 - 19. Jump up ^ `` Avalanche Gulch ''. Mount Shasta Avalanche Center. Retrieved 2016 - 02 - 17. Jump up ^ `` Casaval Ridge ''. SummitPost. Retrieved 2014 - 02 - 16. Jump up ^ `` Mount Shasta Wilderness Permits and Summit Passes ''. U.S. Forest Service. Retrieved 2014 - 01 - 26. Sources Crandell, D.R. ; C.D. Miller ; H.X. Glicken ; R.L. Christiansen ; C.G. Newhall ( March 1984 ). `` Catastrophic debris avalanche from ancestral Mount Shasta volcano, California ''. Geology. 12 ( 3 ) : 143 -- 146. Bibcode : 1984Geo... 12... 143C. ISSN 0091 - 7613. doi : 10.1130 / 0091 - 7613 ( 1984 ) 12 < 143 : CDAFAM > 2.0.CO ; 2. Crandell, D.R. ; Nichols, D.R. ( 1987 ). Volcanic hazards at Mount Shasta, California. Reston, Va. : U.S. Department of the Interior, U.S. Geological Survey. Harris, Stephen L. ( 2005 ). Fire Mountains of the West : The Cascade and Mono Lake Volcanoes ( 3rd ed. ). Mountain Press Publishing Company. ISBN 0 - 87842 - 511 - X. `` Mount Shasta Collection ''. College of the Siskiyous Library. Retrieved 2012 - 04 - 21. Miesse, William C. ( June 17, 2005 ). `` Mount Shasta Fact Sheet ''. College of the Siskiyous Library. Archived from the original on 2005 - 11 - 03. Retrieved 2006 - 02 - 11. Miesse, William C. `` The Name ' Shasta ' ''. Mount Shasta Annotated Bibliography. College of the Siskiyous Library. Retrieved 2006 - 02 - 11. Peterson, Robyn ; Miesse, William C. ( 2008 ). Sudden and solitary : Mount Shasta and its artistic legacy, 1841 - 2008. Redding, California : Turtle Bay Exploration Park. ISBN 1 - 59714 - 088 - 0. `` Peninsula Geological Society and Stanford GES - 052Q combined field trip, Mount Shasta - Klamathnorthern Coast Range area, NW California, 05 / 17 - 05 / 20 / 2001 '' ( PDF ). Peninsula Geological Society. Retrieved 2012 - 04 - 21. Wood, Charles A. ; Kienle, Jürgen, eds. ( 1990 ). Volcanoes of North America. Cambridge University Press. ISBN 0 - 521 - 43811 - X. Zanger, Michael ( 1992 ). Mount Shasta : History, Legend, Lore. Celestial Arts. ISBN 0 - 89087 - 674 - 6. External links Wikimedia Commons has media related to : Mount Shasta ( category ) `` Mount Shasta Webcam ''. Retrieved 2011 - 05 - 08. `` Live webcam ''. SnowCrest Inc. Retrieved 2011 - 05 - 08. `` Sisson Museum ''. Retrieved 2011 - 05 - 08. `` Mount Shasta ''. SummitPost.org. Retrieved 2011 - 05 - 07. `` Mount Shasta ''. Bivouac.com. Retrieved 2011 - 05 - 07. `` Geology of Mount Shasta ''. College of the Siskiyous. Retrieved 2011 - 05 - 08. `` Summiting the Volcano ''. Vimeo.com. Archived from the original on 2010 - 07 - 07. Retrieved 2011 - 05 - 08. `` Land of the Giants ''. Vimeo.com. Retrieved 2011 - 05 - 08. `` Mount Shasta Climbing Above Red Banks ''. Timberline Trails. Retrieved 2011 - 05 - 08. The 124 highest major summits of greater North America Denali Mount Logan Pico de Orizaba Mount Saint Elias Popocatépetl Mount Foraker Mount Lucania Iztaccíhuatl King Peak Mount Bona Mount Steele Mount Blackburn Mount Sanford Mount Wood Mount Vancouver Mount Slaggard Nevado de Toluca Mount Fairweather Mount Hubbard Mount Bear Mount Walsh Mount Hunter La Malinche Mount Whitney Mount Alverstone University Peak Mount Elbert Mount Massive Mount Harvard Mount Rainier Mount Williamson McArthur Peak Blanca Peak La Plata Peak Uncompahgre Peak Crestone Peak Mount Lincoln Castle Peak Grays Peak Mount Antero Mount Evans Longs Peak Mount Wilson White Mountain Peak North Palisade Mount Princeton Mount Yale Mount Shasta Maroon Peak Mount Wrangell Mount Sneffels Capitol Peak Pikes Peak Windom Peak / Mount Eolus Mount Augusta Handies Peak Culebra Peak San Luis Peak Mount of the Holy Cross Nevado de Colima Grizzly Peak Mount Humphreys Mount Keith Mount Strickland Mount Ouray Vermilion Peak Avalanche Peak Atna Peaks Volcán Tajumulco Regal Mountain Mount Darwin Mount Hayes Mount Silverheels Rio Grande Pyramid Cofre de Perote Gannett Peak Mount Kaweah Grand Teton Mount Cook Mount Morgan Mount Gabb Bald Mountain Mount Oso Mount Jackson Mount Tom Bard Peak West Spanish Peak Mount Powell Hagues Peak Mount Dubois Tower Mountain Treasure Mountain Kings Peak North Arapaho Peak Mount Pinchot Mount Natazhat Mount Jarvis Parry Peak Bill Williams Peak Sultan Mountain Mount Herard Volcán Tacaná West Buffalo Peak Mount Craig Tressider Peak Summit Peak Middle Peak / Dolores Peak Antora Peak Henry Mountain Hesperus Mountain Mount Silverthrone Jacque Peak Bennett Peak Wind River Peak Mount Waddington Conejos Peak Mount Marcus Baker Cloud Peak Wheeler Peak Francs Peak Twilight Peak South River Peak Mount Ritter Red Slate Mountain The 100 most prominent summits of greater North America Denali Mount Logan Pico de Orizaba Mount Rainier Volcán Tajumulco Mount Fairweather Chirripó Grande Gunnbjørn Fjeld Mount Blackburn Mount Hayes Mount Saint Elias Mount Waddington Mount Marcus Baker Pico Duarte Mount Lucania Mount Whitney Popocatépetl Mount Shasta Monarch Mountain Shishaldin Volcano Mount Robson Redoubt Volcano Mount Elbert Mount Sir Wilfrid Laurier Nevado de Colima Mount Vancouver Mount Sir Sandford Mount Baker Mount Torbert Pic la Selle Barbeau Peak San Jacinto Peak San Gorgonio Mountain Charleston Peak Pavlof Volcano Mount Veniaminof Mount Adams Skihist Mountain Mount Hubbard Mount Ratz Mount Odin Mount Isto Mount Monashee Iliamna Volcano Mount Olympus Mount Columbia Mount Queen Bess Mount Cook Mount Hood Mount Sanford Mount Tom White Mount Cooper Wheeler Peak Ulysses Mountain Glacier Peak Mount Kimball Blue Mountain Peak Wedge Mountain Otter Mountain Mount Griggs Nevado de Toluca Kwatna Peak Outlook Peak Mount Foraker Golden Hinde White Mountain Peak Mount Crillon Stauning Alper Cerro Teotepec Scud Peak Keele Peak Cloud Peak Gannett Peak Razorback Mountain Mount Vsevidof Mount Odin Cerro el Nacimiento Mount Hesperus Picacho del Diablo Mount Farnham Palup Qaqa HP Mount Bona Oscar Peak Pic Macaya Montaña de Santa Bárbara Mount Assiniboine Mount Jancowski Cerro Las Minas Mount Drum Gladsheim Peak Milne Land HP Mount Dawson Payers Tinde Beitstad Peak Mount Chiginagak Mount Edith Cavell Alsek Peak Mount Valpy Perserajoq Mount Cairnes The 107 most isolated major summits of greater North America Denali Gunnbjørn Fjeld Pico de Orizaba Mount Whitney Mount Mitchell Mount Washington Mount Rainier Mount Elbert Pico Duarte Chirripó Grande Shishaldin Volcano Barbeau Peak Mount Caubvick Volcán Tajumulco Melville Island HP La Grande Soufrière Tanaga Volcano Avannaarsua HP Mount Isto Cerro San Rafael Mathiassen Mountain Mount Logan Angilaaq Mountain Signal Hill Mount Odin Cerro el Potosí Mount Waddington Melville Hills HP Keele Peak Mount Shasta Perserajoq Mealy Mountains HP Peary Land HP The Cabox Volcán Everman Greenland Ice Sheet HP Gannett Peak Mont Yapeitso Mount Robson Mount Osborn Mount Igikpak Ulysses Mountain Cerro de Punta Cerro Gordo Pico San Juan Mont Jacques - 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Question: when was the last time mount shasta was active
Answer: about two centuries ago