Mount Oso is a high and prominent mountain summit in the San Juan Mountains range of the Rocky Mountains of North America.

The 13,690-foot (4,173 m) peak is located in the Weminuche Wilderness of San Juan National Forest, 30.8 miles (49.5 km) northeast (bearing 42°) of the City of Durango in La Plata County, Colorado, United States.

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