The cache is not at the posted coordinates.
Hike the ridge to the west of Snowmass village that forms the boundary of Brush Creek valley and you'll find this edge of the rim with a panaramic view of the entire Snowmass ski area.
Take the S Rim Trail and swing by the Yin-Yang cache (GC63PDC) and discover the secret compartment in the cache to find the final coordinates which is farther north on S Rim Trail. The total hike is 3 miles round trip regardless of which end of the trail you return to. S Rim trail is open year round and is well traveled by locals and snowpacked during the winter.
Additional Waypoints
P067EBR - South Rim Trailhead Parking
N 39° 12.511 W 106° 57.439
PK67EBR - Rim Trail Junction Parking
N 39° 13.778 W 106° 56.249