2021 Map of Slumgullion Pass

About this map

Castle Dome Mountains dominate this section of the Arizona desert, where the topography is defined by high ridges and the eponymous Slumgullion Pass. The landscape is a network of ephemeral drainage patterns, including the prominent Gravel Wash and Tinaja Seca, which illustrate the arid hydrology of Yuma County. Surveyed by the U.S. Geological Survey, this map provides a precise view of the terrain near significant landmarks such as Thumb Peak and Thumb Butte. The grid of the Public Land Survey System is overlaid across the natural features, marking the townships from t3s r18w through t5s r17w. This document serves as a detailed baseline of the desert floor and its surrounding peaks as they appeared in the early 21st century.