Namibia s largest dam lies close to the origin of the Fish River. Close to Mariental and about 250 km south of Windhoek Hardarp Game Reserve wraps around the 25 km Hardap Reservoir. The dam was built in the 1960 s and holds a capacity of 320 million cubic metres. The reservoir is home to a variety of aquatic birds including white pelicans flamingos cormorants African darters spoonbills and the majestic African fish eagle. The Hardap Game Reserve is also home to Namaqua sandgrouse Stark s lark Sclater s lark Bradfield s swift as well as ostrich and kori bustard. More than 200 bird species have been counted in the reserve making is a worthwhile destinations for birders. The Game Reserve Surrounding the dam covers an area of 252 km and features a circular day walk of 15 km. The most common species in the area are kudu zebra red hartebeest springbok gemsbok and steenbok. You might see traces of leopard of the four black rhinos that where moved to Hardap from the Kunene Region but you have to be quite lucky so see them. The Hardap Recreation Resort is currently being upgraded with a floating bar and restaurant guided tours and sunset cruises. The resort will only be open to visitors after the redevelopment is completed.