Common Sense Note
Parents need to know that the violence in the movie is visceral and bloody. A car accident puts spikes through a character's head (visible from the rear) and kills a child (off-screen). Once inside the very small-spaced cave, the women argue and show fear (in alarming scenes conveying subjective states). The monsters are gruesome, both pasty and slimy, as well as vicious. Some characters lie to each other, but the reasons are more complicated than in most horror films.
Mostly unspoken tension concerning a husband who cheats on his wife with her best friend.
Brutal, grisly violence inflicted on and by women cave-climbers: Images include dismembering, penetrations, crushed heads and chests.
Plenty of f-words, increasing as the women go deeper into the cave, as well as other obscenities.
Some of the women courageously look out for each other; some are selfish, tricky, and fearful.
Drugs / Tobacco /
Characters smoke a couple of cigarettes and drink beers the night before the descent.