Follow the trail to the rock field and hike down to the bottom of the rock field, Look for the very large rock on the west side of the rock field with a cairn and you will soon discover this cache. You'll have to look around for it, it is concealed but not impossible! Ships ahoy!
Additional Waypoints
T08A4Y6 - Lower McCoullough Gultch
N 39° 24.127 W 106° 03.051
Start at LOWER McCoullough Gultch trail head