Related Clues:
- Collier entrance
- Shafted entrance
- Excavation has shifted by foot
- Lengthy cylinder
- Ray found in mine passage
- Passage from 'Clemenza di Tito'
- Mole creation
- 35-Across' creation
- Mine access; handle
- A horizontal rather than vertical way into a mine
- Ray; access hole to a mine
- Do be quiet at the back
- Horizontal passage leading into a mine
- Bore any one of Tom, Dick or Harry?
- Problem for a claustrophobic driver