Eastern California boasts the greatest dryland relief in the contiguous United States, offering a rich variety of environments and spectacular geology. Illustra

Eastern California--a geologically dramatic region with the ever-present risk of volcanic eruptions, earthquakes, flash floods, and sand storms--boasts spectacu

Twenty vignettes focus on particular geologic scenes, relationships, and features of southern California's active landscape.

Most people think of Nevada as a land of casinos and drive-in wedding chapels punctuating vast expanses of desolate desert. But at the heart of the Basin and Ra

While visiting more than twenty-seven amazing sites, you�ll discover why many of Yosemite�s domes shed rock shells like onion layers, what happens when a vo