The Dark Ground - 'The Lost': Book 1 by Gillian Cross
A flight back from holiday. An explosion on the plane. Robert wakes up, alone in the jungle, with neither food nor shelter. Unfamiliar creatures are roaming about - and he can't get rid of the feeling that someone, or something, is watching him. This is the story of Robert's struggle for survival - from his realization of what has happened to him and where he is, to his perilous journey homeward. An incredible adventure story full of suspense and surprise.