Big Marys Island USGS Big Marys Island Quad, Montana, Topographic Map

Big Marys Island is an Island in the state of Montana (county of Yellowstone), located at latitude - longitude coordinates (also known as lat-long or GPS coordinates) of N 46.00636 and W -107.92983. Big Marys Island is shown in the center of the topographic (topo) map, which is sourced from the United States Geographical Survey map USGS Big Marys Island quad. The nearest major town is Pompeys Pillar, MT.