Some of the specific features that can be identified in this arid terrain immediately southwest of Odessa are highly reflective, sparsely vegetated sand dunes; white nonvegetated dry lakebeds; dry Juan Cordona Lake northeast of the meandering Pecos River and its floodplain; and Interstate Highway 20 (lower left corner). Subtle grid patterns of small, light dots show the locations and concentrations of producing oil and gas fields in the region.