Grand Canyon Glen Canyon Hoover Dam
This category covers the geological formations and man-made structures located in the southwestern United States. The Grand Canyon is a massive canyon carved by the Colorado River, known for its colorful rock layers and stunning vistas. Glen Canyon is a deep sandstone canyon that was flooded to create Lake Powell, a popular recreation area. The Hoover Dam is a concrete arch-gravity dam on the Colorado River, providing water and hydroelectric power to the surrounding areas.