A story by Taos News dated 08/01/19 confirms it’s in southern Colorado near the New Mexico border. A herd of 150 wild horses inhabits an area formally known as San Pedro Mesa, which includes the Sanchez Reservoir.
Judy Barnes of Spirit of the Wild Horse, a non-profit organization she started, cares for the animals, protecting them from mustangers.
The article did not indicate if the land was public or private and if it was subject to livestock grazing.
RELATED: Wild Horse Mesa.
UPDATE: Judy said WHM is on private land, part of a real estate development known as Melby Ranch, with some livestock grazing on the east side.
Western Horse Watchers Association 