The Descent: Part 2 (2009)
Videos: Trailers, Teasers, Featurettes
Distraught, confused, and half-wild with fear, Sarah Carter emerges alone from the Appalachian cave system where she encountered unspeakable terrors. Unable to plausibly explain to the authorities what happened - or why she's covered in her friends' blood - Sarah is forced back to the subterranean depths to help locate her five missing companions.
The Descent: Part 2 - watch online: streaming, buy or rent
You can buy "The Descent: Part 2" on Amazon Video as download or rent it on Amazon Video online.