- a range of low mountains in NE Oregon and SE Washington.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a mountain range in the US, in NE Oregon and SE Washington. Highest peak: Rock Creek Butte, 2773 m (9097 ft)
- a mountain range in the Caribbean, in E Jamaica: Blue Mountain coffee is grown on its slopes. Highest peak: Blue Mountain Peak, 2256 m (7402 ft)
- a plateau in SE Australia, in E New South Wales: part of the Great Dividing Range. Highest part: about 1134 m (3871 ft)