Zamba and the Silver Globe — John Raymond

Book 1: ZAMBA OF THE JUNGLE In search of a fabulous horde of gold, Zamba, the legendary King of the Gorillas, visits Ophir. This city, built by descendants of the Lost Continent of Atlantis, lies in a remote African valley. Here he meets the Followers, evil creatures of another planet that attempt to diabolically destroy the one man who stands between them and their plans for the Earth. With only a handful of devoted Wazimba tribesmen and his gorilla companions, Zamba of the Jungle struggles against both the extra-terrestrial monsters and Ophir's green priests.