| Answer | Crossword Clue |
|---|---|
| RIFT | Narrow fissure in rock |
| RIFT | A narrow fissure in rock |
| crevice | A narrow opening or fissure, esp. in a rock or wall |
| crevices | A narrow opening or fissure, esp. in a rock or wall |
| vein | a narrow water channel in rock or earth or in ice |
| fissures | A long, narrow opening or line of breakage made by cracking or splitting, esp. in rock or earth |
