Eden

I generally like this class of books. There is an ancient mystery that has to be solved at great peril.
But I couldn't really follow how the site they found is related to the Biblical Eden. Kind of like the DaVinci Code, the church has a secret that must be kept hidden from all humanity forever.
But instead of just destroying all the evidence and clues, they try to make them hard to follow.
Security through obscurity is never a wise plan.
There is a monster in this book that I found completely unbelievable.