Sixty million years ago the west side of Bright Angel Fault was lifted higher than the east side, creating the canyon that we now see. The exposed walls of Bright Angel Canyon allow us to see the geological history of the area. Tropical seas, coastal beaches, sand dunes, swamps, lagoons, and Sahara-like deserts are represented by the horizontal layers that are exposed. The upper five layers of stacked rock records 70 million years of rising and falling sea levels. The limestone layers represent shallow sea environments, sandstone layers mean sandy beaches or dunes, while shale layers translate to mud flats, swamps, or coastal plains. This picture of Bright Angel Canyon was taken at sunrise from Bright Angel Point on the North Rim of Grand Canyon National Park, Arizona, USA. The Natural World | Nature | Travel Destinations | Horizontal | Outdoors