The Canyon is a Book of Revelations in the rock-leaved Bible of geology ... layers upon layers of rocks exposed by the Colorado River. The expedition down the Green and Colorado Rivers ...

For thrill-seekers, this jewel in the Adirondacks boasts an adventurous twist and remarkable landscapes—a feast for the ...

May 24 -- Green River City, The ten-man crew ... trip to measure the west wall of the canyon, Powell almost loses his life by falling off a rock face. George Bradley takes off his pants and ...

The canyon is anywhere from 800 to 1,200 feet deep and features multiple falls that cascade down the Yellowstone River, including ... including its many colors and rock formations.