The Caprivi is a tropical area, with high temperatures and much rainfall during the December-to-March rainy season, making it the wettest region of Namibia. The terrain is mostly made up of swamps, floodplains, wetlands and woodland. In addition to the Zambezi River, the strip also holds the Cuando and Kwando River, which marks the border with Botswana. Tributaries of the river here go by different names, including the Linyata and the Chobe. The region is home to 450 animal species, including elephants, making Caprivi a popular game-watching spot. The wildlife is protected by several nature reserves, such as Bwabwata, Mudumu, Lizauli, West Caprivi Game Park, Mahango Game Reserve, and Mamili National Park; animals travel freely across the unmarked border with Botswana, where the Chobe National Park lies. The strip is also a prime bird-watching area, with almost 70 percent of bird species found in Namibia being recorded here. Katima Mulilo is the largest town.