| gorge(noun, nature, break, crack, opening) |
| ravine(noun, nature, break, cut, crack) |
| canyon(noun, nature, break, cut, crack) |
| notch(noun, nature, break, cut, crack) |
| gap(noun, nature, break, cut, crack) |
| valley(noun, ravine) |
| pass(noun, nature, interval) |
| cleft(noun, nature, break, cut, crack) |
| arroyo(noun, break, crack, opening, drain) |
| gully(noun, break, cut, opening, drain) |
| ditch(noun, ravine) |
| flume |
| gulf(noun, deep, hole, hollow, interval) |
| trench(noun, ditch, ravine) |
| clove(noun, break, cut, crack, rest) |
| crevasse(noun, crack, hole, hollow, interval) |
| cut(noun, break, crack, opening, drain) |
| defile(noun, break, cut, crack, rest) |
| gulley(noun, valley, ravine) |
| abysm |