After crashing , he freed himself from his aircraft only to be captured by hostile ape - men .
Thun'da was Roger Drum , a World War II United States Air Force officer who was shot down while flying over a valley deep in the heart of Africa .
After crashing , Roger Drum freed himself from Roger Drum 's aircraft only to be captured by hostile ape - men .
Thun'da was Roger Drum , a World War II United States Air Force officer who was shot down while flying over a valley deep in the heart of Africa .