| abyss(noun, crack, split, deep, hole) |
| chasm(noun, break, crack, hole, hollow) |
| fissure(noun, break, crack, flaw, void) |
| gorge(noun, interval, valley, ravine) |
| cleft(noun, break, crack, flaw, hole) |
| gap(noun, break, crack, flaw, void) |
| ravine(noun, crack, hole, hollow, interval) |
| canyon(noun, ravine) |
| crack(noun, break, crevice) |
| hole(noun, break, crack, flaw, void) |
| notch(noun, interval, ravine) |
| abysm(noun, interval, gap, rift, hell) |
| chink(noun, break, crack, flaw, gap) |
| crater(noun, void, gap, rift, pit) |
| fracture(noun, break, crack, flaw, gap) |
| pit(noun, hole, hollow, gap, pit) |
| rift(noun, break, crack, flaw, void) |
| valley(noun, ravine) |
| well(noun, hole, hollow, gap, pit) |
| defile(noun, interval) |