Review of The Descent (2005)
Some adventurous women in their twenties meet one year after a terrible accident. They are to explore a well-known system of caves. Their leader leaves the official guide book in the car, but that hardly matters.
Horror in the style of the early 1970s. An all-female dungeon crawl meets “The Beast in the Cave” (1905).
References here: Time Trap (2017).