Words fail me. This movie was dreadfully bizarre. Cavemen? Space Aliens?? How did this movie get made? Plausible plot at the beginning, then, the deeper they went into the cave, deeper into utter nonsense.

Interesting story, good twist at the end that was unexpected. Way too many f-bombs and a 6 year old using the f-bomb is not funny. Why are writer's unable to have dialogue that does't include countless f-bombs? I would have given it 1 more star if not for that.