Knowra Mount Hood Mount Hood Mount Hood is a glaciated stratovolcano in Oregon’s Cascade Range, rising 3,429 meters (11,249 feet) above sea level. It is Oregon’s highest peak and a potentially active volcano.
Stratovolcano : A steep-sided volcano built from successive layers of lava, ash, and other erupted material. Mount Hood’s layered cone and explosive history fit this volcano type.
Cascadia subduction zone : A plate boundary where the Juan de Fuca Plate descends beneath the North American Plate. Its subduction supplies magma that feeds Mount Hood and other Cascade volcanoes.
Mount Hood climbing : The practice of ascending Mount Hood by its established routes and other climbing lines. Climbing routes cross glaciated terrain where weather, crevasses, and rockfall pose hazards.
Mount Hood summit : The highest point of Mount Hood, at 3,429 meters (11,249 feet) above sea level. Its summit marks Oregon’s highest elevation and the destination of climbing routes.
Mount Hood volcanic hazards : The volcanic threats posed by Mount Hood, including lahars, pyroclastic flows, and ashfall. Its glaciers and steep slopes can turn eruptions or collapses into destructive flows.
Juan de Fuca Plate : An oceanic tectonic plate that moves beneath the North American Plate along the Pacific Northwest coast. Its descent beneath North America drives volcanism beneath Mount Hood.
Timberline Lodge : A historic mountain lodge on Mount Hood’s south slope, completed in 1937. The lodge anchors recreation and skiing on the mountain’s south side.
Crater Rock : A prominent volcanic rock formation on Mount Hood’s south side, below the summit. It lies beside the principal south-side climbing route and near the summit crater.
Lahar : A fast-moving volcanic mudflow made of water and volcanic debris. Mount Hood’s glaciers and loose volcanic deposits could feed lahars down its valleys.
Cascade Range : A mountain range extending from British Columbia through Washington and Oregon into northern California. Mount Hood rises within the Oregon section of this volcanic mountain chain.
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