EXCLUSIVE: In the new trailer for Into the Okavango, we see the picturesque landscape and animals of Okavango Delta — and the threats endangering the African river basin. National Geographic Documentary Films’ follow-up to the Jane Goodall docu Jane takes us on a journey alongside Dr. Steve Boyes as he and a group scientists, photographers, filmmakers, and African guides make it their mission to protect the basin before it gets worse.

The pic, which makes its world premiere Sunday at 5 PM at the Tribeca Film Festival, marks the directorial debut of National Geographic photographer Neil Gelinas, who accompanied the researchers on this stunning expedition down the Okavango River to discover how or why the river — which is the source of Africa’s wildlife lifeline — is drying up.

Gelinas and the film’s subjects Adjany Costa, Steve Boyes and Water Setlabosha will be among the attendees for the premiere at the Tribeca Festival Hub.

Watch the trailer above and check out the poster below.

Nat Geo