Good ideas in this novel, unfortunately very badly translated: many faults, there even has a translation oblivion, one can wonder if this does not prejudice the author ... It must still clear that despite the coverage and presentation, so do not expect a novel about the abyss. This is primarily a scientific and historical thriller that sometimes bogs down in obscure details. He holds still in suspense, certain revelations and twists punctuate the story rather well, despite all this remains quite bland and stodgy when it comes to scientific explanations.