The San Juan Basin borders the Chuskas on the east, and typical elevations in nearby parts of that basin are near . The eastern escarpment of the mountains is marked by slumps and landslides that extend out onto the western margin of the San Juan Basin.
The San Juan Basin shares a border with the Chuskas to the east, and the surrounding area has elevations close to .  The eastern side of the mountain range features slopes prone to slumps and landslides that reach out towards the west side of the San Juan Basin.