Cross River Gorilla (IMAGE) Wildlife Conservation Society Caption The Cross River gorilla, the most endangered great ape in Africa, is seen here in Cameroon's Limbe Wildlife Center. Images of wild Cross River gorillas are rare, due to the rugged terrain in which they exist and the great ape's elusive behavior. Credit Nicky Lankester Usage Restrictions One-time usage only. Must use with the following credit: Nicky Lankester License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.