Related Clues:
- Notes places for works on the farm
- They may be cracked using stethoscopes
- Jewel cases?
- They may be blown or cracked
- Vaults for valuables
- They're still often dialed
- Compartments that hold cash
- Hiding places in walls
- What walls might hide
- Cracksman's targets
- Cash holders
- They're occasionally cracked
- Good ones are never cracked
- Places where numbers are dialed
- Ploughs land