Bernard Werber - Les Thanatonauthes

The Thanatonauths is the 1st part of d The Thanatonauths trilogy by a modern french science-fiction writer Bernard Werber.
The novel could be characterized as a philosophic science fiction with a solid mount of fantasy, takes us on a voyage to the last unexplored continent, Death, "a place from which nobody returns".
The book scattered with a number of different sacred texts drawn from mythology, religion, and cosmogony. And it is astonishing to see that each of these points of view resemble each other and tell the same story just with different words and symbols. The colonisation of after-death-world world starts!