Namibia is one of the last frontiers of the surfing world. It receives consistent swell, but aside from one or two small patches of coastline close to the few towns, it remains almost completely untouched by surfers. Extreme isolation, unfriendly terrain and virtually impossible access combine with cold water, strong currents, dense fog, unpredictable conditions and lots of very large sharks to keep much of the coast unexplored. The entire Namibian coastline, over 1500km (930mi) long, forms a part of the oldest desert in the world. The Namib Desert is characterised by huge red dunes in the south, making the coast completely inaccessible except around the crumbling German colonial town Lüderitz, which itself has several fickle breaks. The central zone and the major coastal towns of Swakopmund and Walvis Bay are the most commonly surfed areas. North is the Cape Cross Seal Reserve - three classy left points that house the largest seal colony in the southern hemisphere. Sharks are drawn to the seals, but in truth the biggest obstacle to surfing these points are the National Park officials. After a small minority of surfers abused the rules and regulations, they have banned surfing anywhere within the park grounds.