The action of wind and water can form cave openings like natural rooms within the rock.

VOA: special.2009.07.20

Hazel Barton is a rare bird among medical microbiologists, more than likely the only one with a map of South Dakota's Wind Cave tattooed on her left biceps.

FORBES: Cave Woman

Its decision to cave in, and wind down its one remaining business, has made the bank's demise inevitable.

BBC: Swiss bank Wegelin to close after US tax evasion fine