Mosca Pass is a high mountain pass at an elevation of 3.007m (9,865ft) above the sea level, located on the border of Huerfano, Saguache and Alamosa counties, in south central Colorado, USA.
Located on the west side of the Sangre De Cristo Mountain Range in the San Luis Valley, within the San Isabel National Forest, the road to the summit is totally unpaved. It’s called County Road 583. 4x4 vehicle required.
At the summit there is a large roof top antenna structure of communications. Rapid weather changes occur year round without warning. Be prepared for anything, even snow in the summer months. Starting from Gardner, in Huerfano County, the road to the summit is 30.09km (18.7 miles) long. Over this distance, the elevation gain is 870 meters.