How frustrating
This had all the elements of a potentially good action/adventure/ancient mysteries movie. It is unfathomably why they opted to say "nah, let's be a B horror movie instead." The found footage/shaky cam thing was pointless. If they had just straight out filmed it and dropped the "too dark to see" stuff, the wildly shaking camera scenes, the flickering cutting-out lights, etc., this would have all played out really well. It was a good story with a solid puzzle, a great setting, and a decent cast. Who takes that kind of a winning combo and intentionally turns it into garbage?
Movies are IQ tests; the IMDB boards are how people broadcast their score.