Savanna
A savanna is a tropical/subtropical grassland characterized by scattered trees and tall grasses. Classified as Aw (savanna climate) in Koppen, it has distinct wet and dry seasons with 500-1,500mm annual rainfall - between rainforest and desert.
Savannas cover about 40% of Africa, spanning Kenya, Tanzania, South Africa, and Botswana. The Serengeti (Tanzania) and Masai Mara (Kenya) are world-famous savannas. In South America, Brazils Cerrado and Venezuelas Llanos are savanna equivalents.
In GeoHint, vast savanna or large wildlife habitat strongly suggests East Africa (Kenya, Tanzania). Savanna + South America means Brazil or Venezuela.