The famous rock formation located in Arizona is Monument Valley. It is renowned for its stunning red sandstone buttes, mesas, and spires that rise dramatically from the desert landscape. Often mistaken for a national park, Monument Valley is part of the Navajo Nation Reservation and has become an iconic symbol of the American West. The area has featured prominently in films and advertisements, showcasing its breathtaking vistas, especially at sunrise and sunset when the colors shift dramatically. Visitors can take guided tours led by Navajo guides to learn about the culture and history of the region.