crepaccio :
(n) (m) (nella roccia) large crack, fissure;
(nel ghiaccio) crevasse

gola : gorge
a narrow passage through land; especially : a narrow steep-walled canyon or part of a canyon...

HTH
Good luck!


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Note added at 2002-09-11 14:27:26 (GMT)
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fissure - a narrow opening or crack of considerable length and depth usually occurring from some breaking or parting...