Crevasse

The climber slipped on a rock and fell into a crevasse.

The climbers perished after falling into a crevasse.

The rope snapped and Tom fell down the crevasse.

I moved my left hand to the small of her back, just above her belt-line and stroked the peach fuzz in her crevasse with my fingers.

[…] he laments that he can find no physiological phenomenon answering to his subject’s winning a race, or losing it. Between his terminal output of energy and his victory or defeat there is a mysterious crevasse. Physiology is baffled.