double clickRoaring Twenties - Ten Miles of Grand Canyon Whitewater Bliss
Grand Canyon
6 or 7 Day Rafting Vacation

Mile 20-30 - Roaring Twenties Rapids

As the Colorado River cuts deeper into the canyon’s geologic strata, Redwall Limestone begins to appear along both shorelines. This limestone represents an ancient deep-sea environment from 350 million years ago. Many fossils abound in the Redwall, perhaps most notably, conically-shaped nautiloids that once roamed the world’s oceans. Due to the hardness of the limestone and it’s resistance to erosion, rapids are larger and more frequent in this section. Because of the abundance in whitewater activity during this ten mile stretch, river runners refer to it as the Roaring Twenties.

Lower Gorge Grand Canyon

Lower Grand Canyon Mile by Mile »

The lower Grand Canyon, as traveled by Western's 3 or 4 day expedition begins at Whitmore Wash (mile 188) and finishes at Lake Mead (mile 277).

See Lower Grand Canyon