Hide and Seek: A Harry Stubbs Adventure by David Hambling

Harry Stubbs, an up-and-coming heavyweight boxer, takes on a dare to explore a disused amusement park attraction. The fake mine is said to be haunted by something with a craving for human blood, but Harry does not believe a word of it, and he’s not afraid of anything or anyone. The weird horror he encounters will change his mind — and Harry will need to use his brains as well as his piledriver punches if he is to survive