| Answer | Crossword Clue |
|---|---|
| galleries | A horizontal underground passage, esp. in a mine |
| adits | a nearly horizontal passage from the surface in a mine |
| adit | a nearly horizontal passage from the surface in a mine |
| level | horizontal passage in a mine intended for regular working and transportation |
| adits | nearly horizontal passage leading into a mine |
| adit | nearly horizontal passage leading into a mine |
