Roadside Geology of Arizona Gems this book places Biswell's study—and

this book places Biswell's study—and his legacy—in the context of recent developments in the field

This Trails Illustrated topographic map is the most comprehensive recreational map for the Yuba and American Rivers area of the Tahoe National Forest

No one can ignore the colorful rocks of Utah: the Vermilion Cliffs of Wingate sandstone

the Neon Road

and revised information on roadside attractions

Roadside Geology of Arizona Gems this book places Biswell's study—andThe rise of mountains and the spread of deserts has marked the geologic history of Arizona. Landscapes that we see today are here because of landscapes of the past, and because of tremendous forces deep within the earth, forces that carry continents into collisions and then drag them apart again, forces of heat and pressure and the slow churning boil of the earth's interior. Landscape features result, too, from more comprehensible, more recent forces: