Walk the Golden Gate Bridge

GRAND CANYON IS ABOUT 6 MILLION YEARS OLD

The Grand Canyon is a steep-sided canyon carved by the Colorado River in Arizona, United States. The Grand Canyon is 277 miles (446 km) long, up to 18 miles (29 km) wide and attains a depth of over a mile (6,093 feet or 1,857 meters).

The canyon and adjacent rim are contained within Grand Canyon National Park, the Kaibab National Forest, Grand Canyon-Parashant National Monument, the Hualapai Indian Reservation, the Havasupai Indian Reservation and the Navajo Nation.

Nearly two billion years of Earth’s geological history have been exposed as the Colorado River and its tributaries cut their channels through layer after layer of rock while the Colorado Plateau was uplifted. For thousands of years, the area has been continuously inhabited by Native Americans, who built settlements within the canyon and its many caves.

The Pueblo people considered the Grand Canyon a holy site, and made pilgrimages to it.[10] The first European known to have viewed the Grand Canyon was García López de Cárdenas from Spain, who arrived in 1540.