The desert known for its red sand dunes and located in Namibia is the Namib Desert. This desert is one of the oldest and most arid deserts in the world, stretching along the Atlantic coast. The Namib Desert is famous for its striking landscapes, particularly the towering red sand dunes of Sossusvlei, which are among the tallest in the world. The unique ecosystem supports various wildlife adapted to the harsh conditions, making it a challenging yet fascinating environment for researchers and tourists alike.