CCC 1939 hut?

It was basically just a 10 x 10 room built into the hillside w/ rafters - placard over the door says CCC 1939 so it was obviously built during the FDR era. Could've been a storage facility for food or a line shack for workers - I'll ask Ranger Raymond about it tomorrow. One thing I noticed when I stuck my head inside was that it was at least 10-15 degrees cooler in there.