Grand Canyon
The Grand Canyon is a steep-sided canyon carved by the Colorado River in Arizona, renowned for its immense size and layered, colorful rock formations that reveal nearly two billion years of geological history.
The canyon is about 277 miles long, up to 18 miles wide, and reaches depths of over a mile (6,000 feet). The Colorado River carved the canyon over millions of years, exposing rock layers that provide a rare geological record of Earth's history.
The area has been inhabited by Indigenous peoples for thousands of years, including the present-day Havasupai, Hualapai, Navajo, and Hopi nations, some of whom still live within or near the canyon.
Established as a U.S. National Park in 1919, it was named a UNESCO World Heritage Site in 1979 and remains one of the most visited natural landmarks in the world.