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An expedition of American scientists was annihilated by someone or something. Blurred shadows of unknown animals were recorded on a video. The second team was dispatched to the site to find the cause of the accident and a hidden diamond deposit of enormous value. Primatologist, Peter Elliot and his partner gorilla who can talk with "signs", joined the team and they found the amazing truth in an ancient ruin buried in the deep forest. A composite of science and action and entertainment, this is a good example of Crichtonesque.