Although Hemingway did travel to Africa, it would not be until much later and to an entirely different region.
His first visit was a 10-week safari to Kenya and Tanzania in 1933 with his second wife, Pauline Pfeiffer. However, a prolonged and extreme bout of dysentery forced the couple to spend much of their time in Nairobi. Naturally, as with the majority of Hemingway's life, his experiences became a part of his fiction, and what he gleaned there provided ample material for the novel Green Hills of Africa, as well as short stories like 'The Snows of Kilimanjaro' and 'The Short Happy Life of Francis Macomber'.
His second African safari did not take place until 1953-1954, this time with fourth and final wife, Mary Welsh. What the trip lacked in illness, it made up for in drama and injury, nearly costing Hemingway his life -- twice. A number of emergency plane landings and two crashes left him with a variety of injuries that would affect him for the remainder of his life. So catastrophic were they in fact that some American papers ran with premature obituaries.