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Extreme Underground Architecture Crossword Puzzle for Homeschool is a hard crossword puzzle with 20 clues covering . Play it online for free below, or create your own crossword with our free crossword maker.

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Extreme Underground Architecture Crossword Puzzle for Homeschool
Challenge advanced learners with this hard crossword exploring record holders and extremes within obscure underground city architecture, perfect for homeschool students.
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Across
  • 1. Watertight chamber used in underwater or underground construction
  • 2. Often above ground, but rarely adapted as a light-filtering structure in underground courtyards
  • 3. Reservoir for storing underground water in cities
  • 5. Describing complex, maze-like underground passages
  • 6. An underground cemetery with tunnels and recesses
  • 10. Magical or wondrous construction feats, metaphorically used for extreme underground designs
  • 12. Ancient Roman system of underfloor heating used in underground rooms
  • 18. The hobby of exploring caves, often uncovering underground dwellings
Down
  • 4. Roman underground tunnels for water and access
  • 7. Vaulted underground chambers beneath churches
  • 8. Describing structures built entirely under the earth’s surface
  • 9. Full of twists and turns, like hidden underground corridors
  • 11. Architectural technique creating arched supports underground
  • 13. Underground temple or tomb complex carved beneath the earth
  • 14. Relating to limestone terrain with caves and sinkholes underground
  • 15. Pertaining to cave-dwelling lifestyles or architecture
  • 16. Ancient cave dweller often linked with subterranean habitations
  • 17. Permanently frozen subsoil influencing underground architecture in cold regions
  • 19. Container or room for storing human skeletal remains underground
  • 20. Early architectural form sometimes found in underground dwellings
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