Levison sets out to trek alongside elephants on their annual migration across Botswana. He gets up close with a group of orphans and takes part in an ancient ritual before finding a herd to follow.

Levison continues his trek following Botswana's elephants on their annual migration. He narrowly avoids being surrounded by nervous bull elephants before joining them for a drink at a waterhole.

Levison and his guide Kane conclude their journey in the Okavango Delta, a vast wetland that is home to lions, crocodiles and angry hippos and where each year more than 40,000 elephants gather to feed.