Montague Island and the Dunes of the Gran Desierto de Altar, Mexico31.7N 114.7W
In the center of this ASAR image of Baja California, Mexico, currents at the mouth of the Colorado River are visible as it discharges around Montague Island and into the Sea of Cortes.
The terrain above is mostly occupied by the vast Gran Desierto de Altar, one of the major portions of the Sonoran Desert of Mexico. Its dunes compose the only active erg dune region in North America.
In contrast with the arid desert, some agricultural areas are also visible in the upper left corner.