Mount Bachelor

Mount Bachelor
Mount Bachelor from the Cascade Lakes Scenic Byway (east of the mountain)
Highest point
Elevation	9,068 ft (2,764 m) NAVD 88[1]
Coordinates	43°58′46″N 121°41′19″W / 43.979415733°N 121.688507775°W / 43.979415733; -121.688507775[1]
Geography
Location	Deschutes County, Oregon, U.S.[2]
Parent range	Cascade Range
Topo map	USGS Mount Bachelor
Geology
Rock age	less than 15,000 years
Mountain type	Stratovolcano (on top of a shield volcano)
Volcanic arc	Cascade Volcanic Arc
Last eruption	5800 BC [3]
Climbing
Easiest route	Ski lifts

Mount Bachelor, formerly named Bachelor Butte, is a dormant stratovolcano atop a shield volcano in the Cascade Volcanic Arc and the Cascade Range of central Oregon, United States. Named Mount Bachelor because it stands apart from the nearby Three Sisters,^[4] it lies in the eastern segment of the central portion of the High Cascades, the eastern segment of the Cascade Range. The volcano lies at the northern end of the 15-mile (24 km) long Mount Bachelor Volcanic Chain, which underwent four major eruptive episodes during the Pleistocene and the Holocene. The United States Geological Survey considers Mount Bachelor a moderate threat, but Bachelor poses little threat of becoming an active volcano in the near future. It remains unclear whether the volcano is extinct or just inactive.

The Mount Bachelor ski area has operated on the mountain since 1958, and the volcano's summit hosts the Mount Bachelor Observatory. A center of winter recreation, the area offers snowshoeing, snow skiing, snow tubing, and dog sledding, among other activities. The summit can be reached by a climbing trail that travels over lava from the volcano.