Death Valley National Park is famous for its vast sand dunes located in the Mojave Desert.

Death Valley National Park, which lies in the Mojave Desert, is renowned for its dramatic landscapes, including some of the largest and most iconic sand dunes in the United States. The Mesquite Flat Sand Dunes are particularly famous and attract visitors from around the world for their stunning beauty and unique desert terrain. While Great Sand Dunes National Park is known for its impressive dunes, it is located in Colorado, not the Mojave Desert. Zion National Park and Joshua Tree National Park are also beautiful parks, but they are not known for sand dunes.