"High dunes" refers to large, elevated mounds of sand found in deserts or coastal areas. They can be quite tall and are typically formed by wind and water erosion over a long period of time. Full definition
Concurrently, coastlines of the Bahamas and Bermuda were impacted by massive storms generated in the North Atlantic Ocean, resulting in a unique trilogy of wave - transported deposits: megaboulders, chevron - shaped, storm - beach ridges, and runup deposits on high dune ridges. (sciencedaily.com)
You will hike in the Fish River Canyon, spot wildlife in Etosha National Park, track predators in the Okavango Delta (where unrivaled luxury safari lodges await you), watch the sun rise over the world's highest dunes in Sossusvlei in the Namib Desert, and get sprayed by the world's largest sheet of falling water at Victoria Falls. (theluxurytravelexpert.com)
Admire the deep gorges of the Fish River Canyon, climb the world's highest dunes at Sossusvlei and discover the life of the desert on this flying safari. (somak.com)