The Hardap Recreation Resort is a National Park located in southern Namibia. It was proclaimed in 1968 and measures 252 square kilometres (97 sq mi). Hardap is situated in Hardap Region, about 250 kilometres (160 mi) south of Windhoek and about 24 kilometres (15 mi) west of Mariental. It surrounds the Hardap Dam, Namibia's largest dam, which lies on the Fish River. There is a game park on the southern side of the dam.