| coulee |
| cranny(noun, break, cut, crack, opening) |
| crevice(noun, hole, perforation, orifice, grommet) |
| dale |
| den |
| dike(drain, ditch, channel, pit, trench) |
| dimple(noun, break, cut, crack, depression) |
| dip(noun, break, cut, crack, depression) |
| disinterring(noun, mine, pit, quarry, digging) |
| dugout(noun, area, drain, ditch, pit) |
| exhuming(noun, mine, pit, quarry, digging) |
| fissure(noun, break, cut, crack, opening) |
| groove |
| gulf(noun, well, dip, hole, hollow) |
| gully(drain, ditch, channel, pit, trench) |
| impression(noun, depression, dip, hollow, pocket) |
| lode(noun, supply, reserve, deposit, pit) |
| moat(drain, ditch, channel, pit, trench) |
| niche(noun, break, cut, crack, opening) |
| nook(noun, cup, indentation, recess, cavity) |