Definition of Blue Mountains
1 mountain range in northeastern Oregon and southeastern Washington; highest is Rock Creek Butte 9105 feet (2775 meters)
2 part of the Great Dividing Range in eastern New South Wales, Australia; highest 4460 feet (1359 meters)
3 range in eastern Jamaica; highest is Blue Mountain Peak 7402 feet (2256 meters)
Learn More about blue mountains
Britannica.com: Encyclopedia article about Blue Mountains
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