San Juan Skyway Scenic and Historic Byway
The San Juan Skyway Scenic and Historic Byway is a 236-mile (380 km) All-American Road, National Forest Scenic Byway, and Colorado Scenic and Historic Byway located in Dolores, La Plata, Montezuma, San Juan, and San Miguel counties, Colorado, United States. The byway forms a loop in southwestern Colorado traversing the heart of the San Juan Mountains.
Source: Wikipedia — San Juan Skyway Scenic and Historic Byway (CC BY-SA 4.0)