STS068-173-138 Sonoran Desert, Arizona, U.S.A. October 1994
The southwest corner of the sparsely vegetated Sonoran Desert is captured in this low-oblique, northeast-looking photograph. The only diversity in an otherwise arid region is created by the irrigated-field patterns along floodplains of the Colorado River (south-flowing) and the Gila River (southwest-flowing). Several circular center-point irrigation fields are visible south of Yuma (bottom center of the photograph). The Gila Mountains east of Yuma and several other ranges--the Chocolate, Kofa, and Eagle Tail Mountains--can be seen between the Colorado and Gila Rivers. The linear Sand Hills are discernible across the bottom of the photograph.

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