* 50 hikes reveal Colorado's geologic history and diversity * Trailside Geology section offers advice for practical study on the trail Erupting volcanoes, shifting seas, the icy embrace of giant glaciers, haunts of the dinosaurs: it's all here in Hiking Colorado's Geology. In 50 hikes, you'll see first-hand evidence of the most dramatic geologic events that created and continue to shape the terrain of this beautiful state. You'll benefit, too, from...