i totally agree . this be pitch black underground and a well worn plot . the best scene i think be the diver explore the cave and go through impossible subterranean passageway and some of them be heart pounding . the scenery be great . have they dispense with the staple alien toothy cgi badboys entirely the movie would have be much well . all they would have have to do be never show any monster at all but have everyone wondering and and follow jack descent into madness and and this might have be a top rate hitchcock style thriller and maybe award material . the act isn not bad . but those rubber bat just reduce it to standard fare .