1982 Map of Gillespie Mountain

About this map

The Continental Divide winds through this high-altitude landscape of the Animas Mountains in southwestern New Mexico. This 1982 provisional edition showcases a terrain defined by high peaks and strategic water management, with numerous named catchments like Pigpen Tank, Gillespie Tank, and South Pigpen Tank supporting the region's ranching or wildlife needs. Human impact is most visible in the southern reaches, where Open Pit Mines and various Prospects suggest a history of mineral exploration in the shadow of Gillespie Mountain. Drainage patterns are clearly delineated, with several seasonal waterways such as Millsite Creek, Ash Creek, and Double Adobe Creek flowing from the divide. The map also identifies local landmarks like Maverick Flat and Anderson Mountain, providing a detailed look at the physical geography of Hidalgo County before more modern developments.