The Delta forms part of the Kalahari Basin, situated at the southern periphery of the Great Rift Valley, and covers an area of 22,000 square kilometres. Although the periphery is semi-arid, the Okavango Delta itself is a patchwork of cool clear streams, lagoons, floodplains and forested islands. In the dry winter season vast numbers of wildlife flock to where the floodwaters infiltrate the delta, providing one of the world’s most spectacular sights.