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Simple Underground Tunnel Terms Explained is a easy crossword puzzle with 4 clues covering . Play it online for free below, or create your own crossword with our free crossword maker.

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Simple Underground Tunnel Terms Explained
Perfect for beginners with simple, common vocabulary
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Across
  • 1. A vertical passage in a mine or tunnel
  • 2. A natural underground hollow
  • 3. Place where minerals are dug underground
Down
  • 4. A passage built underground or through a hill
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