Lost Worlds

S1 E2: The tiny South Atlantic outcrop of Queimada Grande is a Lost World, cut off from the rest of nature. There are no mammals, and to kill birds, the Golden Lancehead has evolved the most powerful venom of any snake in the Americas. Reptile hunter and scientist Mark O'Shea battles his way on to the impregnable island - but then has to face a deadly snake every ten paces.