Gariep Dam is the biggest Dam in South Africa and attracts fish­ing enthu­si­asts and boat lovers. It is sur­round­ed by nature reserves with wildlife run­ning on open plains. The known 165km Gariep Route runs around the dam and it includes a stop at the 80km Ovis­ton tun­nel that is one of the longest of its kind in the world. With the 1km bridges run­ning over the Orangeriv­er near Bethulie.