Note: this drive may require 4WD and can be difficult to access, especially in the spring run-off season.
From 9th Street and Main Avenue in Durango, head west on 9th Street toward Highway 550 (Camino Del Rio) and take a left onto Camino Del Rio. At the intersection of Highway 550 and Highway 160, take a right to continue onto Highway 160 West.
Continue on Highway 160 West for 11 miles, then take a right onto CR 124 at Kennebec Cafe. Continue on CR 124 for 9.3 miles until you see an intersecting dirt road (Lewis Creek Road) to your right. Take this right-hand turn and continue along Lewis Creek Road for a few miles until the road obviously switchbacks.
After the 3rd switchback, park your car in the area on the right side of the road; Walls Gulch Trail will intersect the right-hand (southern) side of the road.