1988 Map of Dugway Range SW

About this map

Spor Mountain and the Thomas Range anchor this geological study of the Utah desert during the late 1980s. The map reveals an intensive mining landscape concentrated on the southern slopes of Spor Mountain, where numerous operations such as the Lost Sheep Mine, Oversight Mine, and Thursday Mine are documented alongside dozens of unnamed prospects. This industrial activity contrasts with the surrounding arid geography, characterized by the broad expanse of Fish Springs Flat to the west and the Black Rock Hills to the northwest. Natural water sources are scarce, with Wildhorse Spring serving as a vital landmark in the central highlands. The drainage patterns of Pismire Wash and the South Fork Pismire Wash further define the rugged topography between the mountains, providing a detailed record of the terrain as it existed before modern shifts in land use or nomenclature.