After a personal tragedy, Sarah joins her friends on a caving expedition in the Appalachian Mountains. But when a rockfall traps them deep underground, their adventure turns into a nightmare. As they search for a way out, the group discovers they are not alone—lurking in the darkness are savage, cave-dwelling creatures. With rising tension and dwindling trust, the women must fight to survive against both the predators and each other.

Shauna Macdonald
as Sarah Carter

Natalie Mendoza
as Juno Kaplan

Alex Reid
as Beth O'Brien

MyAnna Buring
as Sam Vernet

Saskia Mulder
as Rebecca Vernet

Nora-Jane Noone
as Holly

Leslie Simpson
as Crawler

Oliver Milburn
as Paul Carter

Molly Kayll
as Jessica Carter

Craig Conway
as Crawler - Scar
CinemaSerf
A group of six friends are heading off on one of those subterranean caving expeditions that just make me crave wide open spaces. The thing is, though, that one of their number takes them to somewhere hitherto unexplored - without telling them - and so once they start to squeeze their bodies and thei...