Something is down there in the ground, and with dishonest causes for being there where the ground smokes and the mud is warm, really rams this group of five.
but as in every 3rd monster movie the monster is barely visible, a blurry outline and a flysnappersflowers mouth piece is the only you can see.and apart from loads of groans and growels, and dissapearing mighty men that should have a CO detector instead of a CO2 detector. the guiding ''lola'' caracter seems like and sound like a toomb raider caracter, and the continous darkness keeps the secrets very well hidden till you cant figure out whats what.
so productionwise it has many glitches, and a very troublesome daylight logistic nightmare. the darkfilming is so bad, so what is in the dark stays secretly there in the dark forever.
so go out and find yourself an abandoned coal mine pit and make a copycat outta this.you just have to be cruel and sinister and dumbfoundly curious in the acts, its really nothing more.
it started of with a 6, ended up with a weak 4 thinks the grumpy old man. its a shallow story, poor caracter development and the filming is a nightmare