The desert known for its unique rock formations called hoodoos is the Badlands in South Dakota, USA. These striking geological features are formed from eroded limestone, sandstone, and volcanic ash, giving them a distinctive, spire-like appearance. The Badlands are known for their dramatic landscapes, steep canyons, and rich fossil beds, showcasing the region's geological history. Visitors to the area enjoy hiking, photography, and exploring its unique ecosystems and diverse wildlife.