Dereck and Beverly Joubert first found fame as award-winning filmmakers for National Geographic. In 2006, they co-founded Great Plains Conservation, which now has upscale camps in Botswana and Kenya. More than anywhere else, however, the Jouberts are associated with Botswana’s Okavango Delta, in particular the 77,000-acre Duba Plains private concession. It was here that they filmed their remarkable documentary “The Last Lions.” Over the past two years, their original camp has been dismantled and entirely rebuilt. Duba Plains Camp now offers five magnificent tents, plus a two-bedroom suite, designed to evoke the classic safari style of the 1920s. The wildlife viewing is reliably astounding.