The Okavango Delta in Botswana is the world's largest inland delta.

The area was once part of Lake Makgadikgadi, an ancient lake that mostly dried up by the early Holocene, except for seasonal flooding. Today, the Okavango River has no outlet to the sea. Instead, it empties onto the sands of the Kalahari Desert, irrigating 15,000 kmē of the desert. Each year some 11 cubic kilometres of water reach the delta. Some of this water reaches further south to Lake Ngami.

The waters of the Okavango Delta are subject to seasonal flooding, which begins about mid-summer in the north and six months later in the south (May/June). The water from the delta is evaporated relatively rapidly by the high temperatures, resulting in a cycle of cresting and dropping water in the south. Islands can disappear completely during the peak flood, then reappear at the end of the season.

Our lodge, Wilderness Tented Camp, near the Moremi National Park, was probably the most primitive of the camps where we stayed.