Mount Bachelor

View of Mount Bachelor and Sparks Lake

Mount Bachelor is a stratovolcano in the state of Oregon, USA. The mountain is located 5 km south-west of Tumalo Mountain, which rises on the other side of the Cascade Lakes Scenic Byway, and about 15 km southeast of South Sister. To the south of Mount Bachelor extends a series of small shield volcanoes and cinder cones. The city of Bend, the county seat of Deschutes County, located 32 km to the east. The forests on Mount Bachelor are part of the Deschutes National Forest.

The mountain is a popular winter sports resort.


11000-15000 years ago formed instead of today's Mount Bachelor is a shield volcano. Only later, when the eruptions were huge, it was the current stratovolcano. Of the larger volcanoes in the area of Three Sisters he is the youngest. The mountain consists mainly of basaltic andesite basalt and.

Currently there are no volcanic activities are observed, does not have to mean that the volcano is extinct. Fumaroles occasionally occur where the rock is porous and thus permeable to air. The last eruption took place 8,000 to 10,000 years ago. Less than 7,000 years, the massive outbreak of further south- south-west to Mount Mazama occurred (see also: Crater Lake National Park ). The ash covered the 110 km distant Mount Bachelor complete.


The term Bachelor (English for bachelor ) alludes to its location in a certain distance to the Three Sisters. Until the 1980s the volcano Bachelor Butte was called. Long before he was called Brother Jonathan.