The Chimpanzee Rehabilitation Project (CRP) is a rehabilitation center associated with the Pan African Sanctuary Alliance (PASA), located at the River Gambia National Park (RGNP), established in 1979. It is the home of 100 chimpanzees living free in four separate groups spread in three islands. The main mission of the rehabilitation center is the caring and reintroduction of chimpanzees. The center allows visits by boat to view the primates, but humans cannot have contact with them.