The Sand Sheet

More than two million acres of sand, born and blown from an ancient sea beginning about ten thousand years ago, stretch across eight counties in deep South Texas. Known as the Coastal Sand Plain, the Texas Coastal Sand Sheet, or just the Sand Sheet, it is a region of few people, little rainfall, and no water. Among the dunes and dry, brown flats, only the hardiest shrubs and grasses provide habitat for the coyotes, quail, and rattlesnakes that live here.

Arturo Longoria, whose cabin sits am...