Herzog chronicles the sizeable expedition (with a delightful number of tangents and hanging out with the interesting locals) to film and photograph the Ghost Elephants, as well as trying to get a sample of their DNA with the help of Namibian and Luchazi master trackers, and a custom made arrow-head, across the difficult landscape of steep valleys, dense forests, and peat wetlands via Toyota off-road vehicles and small motorcycles, until eventually walking dozens of miles on foot.

Conservation biologist Dr Steve Boyes and director Werner Herzog join Morning Joe to discuss the new National Geographic documentary 'Ghost Elephants'.

Gianfranco Rosi’s “Pompei: Below the Clouds” and Werner Herzog’s “Ghost Elephants” offer thrilling but troubled visions of a world in environmental flux.

The adventurous German director’s latest documentary follows an explorer searching for gargantuan elephants in southwestern Africa.