CrosswordMint
Hidden Depths of Underground Designs
Moderate difficulty suitable for most players
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Across
  • 1. A metal peg driven into rock or earth for support in cave climbing
  • 2. An underground reservoir for storing water
  • 3. A small picturesque cave, sometimes artificial
  • 4. A reinforced underground shelter, often military in purpose
  • 7. Extensive underground burial networks historically used in Rome
  • 9. An arched structure forming a ceiling or roof underground
  • 11. A set of steps leading downward below ground level
  • 13. A channel for air, cables, or fluids beneath floors or walls
  • 14. An underground cemetery consisting of tunnels and rooms
  • 18. An underground conduit for carrying off drainage water and waste
Down
  • 5. A low space that collects water underground in tunnels or mines
  • 6. A passage dug through or under the ground for access or transport
  • 8. A tunnel allowing passage beneath a road or railway
  • 10. A vertical or inclined passageway in a mine
  • 12. A dark underground prison room in medieval castles
  • 15. A tunnel carrying a stream or open drain under a road
  • 16. A complex network of winding underground passages
  • 17. A stone chamber beneath a church often used for burial
  • 19. A temporary shelter dug into the earth, used by soldiers or miners

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