|Elevation||2,439 m (8,002 ft)|
|Location||British Columbia, Canada|
|Prominence||862 m (2,828 ft)|
|Topo map||NTS 092. In topography a summit is a point on a surface which is higher in Elevation than all points immediately adjacent to British Columbia (ˌbrɪtɨʃ kəˈlʌmbiə ( BC) ( (la Colombie-Britannique C Country to "Dominion of Canada" or "Canadian Federation" or anything else please read the Talk Page A mountain range is a chain of Mountains bordered by highlands or separated from other mountains by passes or valleys The North Cascades are a section of the Cascade Range of western North America. A geographic coordinate system enables every location on the Earth to be specified in three coordinates using mainly a spherical coordinate system. A topographic map is a type of Map characterized by large-scale detail and quantitative representation of relief, usually using Contour lines in modern H. 04|
|First ascent||1927 by Stan Henderson, Mills Winram, Fred Parkes|
|Easiest route||Southwest Route (Technical rock climb; Class 5.6)|
Slesse Mountain, usually referred to as Mount Slesse, is a mountain just north of the US-Canada border, in the North Cascades of British Columbia, near the town of Chilliwack. In Climbing, a first ascent (FA is the first modern recorded climb to reach the top of a Mountain, or the first to follow a particular Climbing route Year 1927 ( MCMXXVII) was a Common year starting on Saturday (link will display full calendar of the Gregorian calendar. A climbing route is a path by which a climber reaches the top of a Mountain, rock or ice wall Rock climbing is a Sport in which participants climb up or across natural rock formations or man-made rock walls with the goal of reaching the In Rock climbing, Mountaineering and other Climbing disciplines climbers give a climbing grade to a route that concisely describes the difficulty The United States of America —commonly referred to as the Country to "Dominion of Canada" or "Canadian Federation" or anything else please read the Talk Page The North Cascades are a section of the Cascade Range of western North America. British Columbia (ˌbrɪtɨʃ kəˈlʌmbiə ( BC) ( (la Colombie-Britannique C Chilliwack is a Canadian city in the Province of British Columbia. It is notable for its large, steep local relief. For example, its west face drops over 1,950 m (6,400 ft) to Slesse Creek in less than 3 km (1. 9 mi). It is also famous for its huge Northeast Buttress; see the climbing notes below. The name means "fang" in the Halkomelem language. Halkomelem (also Halq'eméylem, Hul'qumi'num', and Hǝn'q'ǝmin'ǝm') is a Coast Salishan language of the First Nations  Notable nearby mountains include Mount Rexford in British Columbia, and American Border Peak, Mount Shuksan, and Mount Baker, all in the US state of Washington. American Border Peak is a mountain just south of the US - Canada border in the North Cascades of Washington state Mount Shuksan is a glaciated peak in the North Cascades National Park of the United States. Mount Baker (elevation) is an active glaciated andesitic Stratovolcano in the Cascade Volcanic Arc and the Cascades of The United States of America —commonly referred to as the Washington ( is a state in the Pacific Northwest region of the United States.
Most of Slesse Mountain is made up of the granitic rocks of the Chillwack Batholith, which intruded the region after the major orogenic episodes for the region, beginnging around 30 million years ago. A batholith (from Greek bathos, depth + lithos, rock is a large emplacement of Igneous intrusive (also called plutonic rock that forms Orogeny (Greek for "mountain generating" is the process of natural Mountain building and may be studied as a tectonic structural event as a geographical event and The primary rock on Slesse is grey diorite from the Batholith. However the summit ridge and the west face are composed of Darrington Phyllite, a metamorphic rock, produced by contact metamorphism with the rock of the Batholith and with an intrusion of granodiorite. Darrington is a town in Snohomish County, Washington, United States. Phyllite is a type of foliated Metamorphic rock primarily composed of Quartz, Sericite Mica, and chlorite; the rock represents Metamorphic rock is the result of the transformation of an existing rock type the protolith, in a process called Metamorphism, which means "change Metamorphism can be defined as the solid state recrystallisation of pre-existing rocks due to changes in heat and/or pressure and/or introduction of fluids i Granodiorite (ˌgrænəˈdaɪəraɪt/ /ˌgreɪn- is an intrusive Igneous rock similar to Granite, but contains more Plagioclase than Potassium feldspar 
On December 9, 1956, Trans Canada Airlines Flight 810, a North Star airplane crashed on the upper slopes of Slesse Mountain, killing all 62 people aboard. Year 1956 ( MCMLVI) was a Leap year starting on Sunday (link will display full calendar of the Gregorian calendar. Trans-Canada Air Lines (also TCA in English and Air Canada in French was a Canadian Airline and operated as the country's flag carrier Trans-Canada Air Lines Flight 810 was a Canadair Northstar on a scheduled flight from Vancouver to Calgary (continuing to Regina WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout This was one of the world's worst air disasters up to that time. An aviation accident is defined in the International Civil Aviation Organization Annex 13 Prominent among the dead were team members of the Winnipeg Blue Bombers and Saskatchewan Roughriders, on their way home from a game in Vancouver. The Winnipeg Blue Bombers are a Canadian Football League team based in Winnipeg Manitoba. The Saskatchewan Roughriders are a Canadian Football League team based in Regina, Saskatchewan, founded in 1910. Vancouver (vænˈkuːvɚ is a coastal A memorial to the dead can be found on a spur road just above the Chilliwack River Road. The site itself was supposed to have been consecrated by the Cemeteries Act after the discovery of the crash site and associated human remains, some of which were gathered into a common grave, others found by climbers and hikers have been placed in a "shrine" out of the weather in a discreet location. In the 1990s the provincial government, under pressure from the Families of Slesse organization, finally passed legislation to enshrine protection of the site, which was under threat from clearcut logging at the time, and markers have been placed on trails leading into the site requesting it be respected by hikers and others accessing it.
Slesse Mountain was first climbed on August 10, 1927, by Stan Henderson, Mills Winram, and Fred Parkes, via a route starting from Slesse Creek. The standard route today is the Southwest Route, which involves approximately 1,650 m (5,413 ft) of ascent, a good deal of scrambling and some sections of technical rock climbing up to class 5.6. Scrambling (also known as alpine scrambling) is a method of ascending rocky faces and ridges Rock climbing is a Sport in which participants climb up or across natural rock formations or man-made rock walls with the goal of reaching the In Rock climbing, Mountaineering and other Climbing disciplines climbers give a climbing grade to a route that concisely describes the difficulty However Slesse is most famous for the Northeast Buttress, first climbed on August 28, 1963 by Fred Beckey, Steve Marts, and Eric Bjornstad. Year 1963 ( MCMLXIII) was a Common year starting on Tuesday (link will display full calendar of the Gregorian calendar. Fred Beckey (born Friedrich Wolfgang Beckey 14 January 1923 is an American mountaineer, who has made hundreds of First ascents more than any other North American It is a serious multi-day rock climb (Grade V) with technical difficulty of class 5.8 or 5.9. In Rock climbing, Mountaineering and other Climbing disciplines climbers give a climbing grade to a route that concisely describes the difficulty In Rock climbing, Mountaineering and other Climbing disciplines climbers give a climbing grade to a route that concisely describes the difficulty  This climb is featured in Roper and Steck's Fifty Classic Climbs of North America.