1984 Map of Grasshopper Butte

About this map

Keyhole State Park surrounds the northern reaches of Keyhole Reservoir in this mid-1980s landscape, where the high plains meet rugged drainage basins. The map illustrates a transitional environment shaped by both recreation and extractive industry, notably the numerous Bentonite Pits and Beatonite Pits scattered across the eastern terrain near Iron Run. The reservoir itself is defined by distinct inlets like Coulter Bay and Cottonwood Creek Bay, providing a stark contrast to the arid draws and buttes to the south.