Situated on the western edge of the Kalahari Sandveld, the flat-topped Waterberg (with its smaller appendix, Klein Waterberg) and Mount Etjo are striking topographic features that some 150 million years ago, during the Jurassic period, formed part of a much more extensive plateau. Both consist of sandstone underlain by shales and mudstones, and rise 1930 m and 2082 m, respectively, out of the surrounding thornbush savannah. While the Waterberg Plateau is a popular National Park, which apart from its geological interest, hosts a diverse fauna and flora, the dinosaur footprints at Otjihaenamaparero among the foothills of "Klein Etjo" enjoy National Monument status.