Formed by fog and comprising the highest dunes on the planet, Namibia’s coastal desert is unlike any other. You can explore the UNESCO-designated Namib Sand Sea when Holland America Line cruises to Walvis Bay; take a flightseeing tour over the Sossusvlei salt pan or a 4X4 safari to Dune 7, the highest in Nambia. Holland America Line also calls in the Germanic town of Luderitz to see wild desert horses and visit eerie Kolmanskop, a former diamond mining town left abandoned to the Nambian sands.