a round hole at the top of a volcano
cavity
a deep, open crack, especially in ice on a glacier
precipice
a narrow opening or crack (in a rock etc)
crack
a deep, narrow opening, usually with a stream, between hills or mountains
valley
(in some religions) a place of punishment after death; a place, condition, of great suffering or misery
place of the condemned; bad situation
a large hole in the earth, especially one from which material is dug out
hole, cavity
(especially in Roman Catholic doctrine) a condition or place after death in which the soul has to be purified by suffering; any place of suffering
hell
a deep, narrow valley
gap in earth's surface
(in stories) the place where the spirits of the dead exist; the part of society that lives by vice and crime
criminal activity, element