The Serengeti is almost surely the setting for Infinity War’s Wakanda scenes, and it is perhaps the best possible place for the Russo brothers to choose as a filming location.
The directors of Avengers: Infinity War just shared a photo that appears to be the filming location for Wakanda.
Several commenters pointed out the high likelihood that the Serengeti would be the filming location for Wakanda-based scenes in Infinity War.
Infinity War directors Anthony and Joe Russo, meanwhile, are hard at work filming the sprawling Avengers sequel and its follow-up back-to-back.