"20180505-FS-Humboldt-NCH-001" by Intermountain Forest Service, USDA Region 4 Photography , public domain
Pine Grove Hills 2014
Motor Vehicle Use Map (MVUM) of the Pine Grove Hills area in Humboldt-Toiyabe National Forest (NF) in Nevada. Published by the U.S. Forest Service (USFS).
U.S. Forest Service (USFS), May 2014