This side of Mosca Pass Trail begins at the top of Mosca Pass and follows Mosca Creek down to the Montville Trail, a self-guided interpretive trail in the Great Sand Dunes National Monument. A toll road was built over this pass in the late 1800's. A flash flood in 1911 destroyed the road and it was abandoned as a passageway over the mountains.
The trail starts amidst open, lush and grassy slopes and descends moderately fast into piñon-juniper, aspen and spruce-fir forests. The trail ends in a steep, walled canyon next to the Great Sand Dunes. Watch for wildlife; each year, visitors report bear sightings.
Beautiful views of the Sand Dunes and the San Luis Valley can be seen on the way down the trail. An adequate number of undeveloped campsites exist along the way. This is an excellent day hike, but a heavily used trail. For those wishing to camp at the dunes, be aware that a fee is charged. If you plan to begin your hike at the dunes, there is an entrance fee as well.
Directions from Alamosa, Colorado: Drive east on U.S. Highway 160 14 miles to State Road 150. Turn north on 150, 17 miles to the Great Sand Dunes National Monument and the Montville Trailhead. Mosca Pass Trail takes off the Montville Trail approximately 1/4 mile from the beginning. There is a fee for entrance to the Great Sand Dunes National Monument.
Directions from La Veta Pass, Colorado: Turn north on Pass Creek Road 11.5 miles to Forest Development Road # 408, 7 miles to the junction with Forest Road 407. Take Forest Road 407, 6 miles to Mosca Pass.