Perfect for beginners with simple, common vocabulary
Hidden Pathways of Subterranean Networks
Perfect for beginners with simple, common vocabulary
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Across
- 1. A vertical passage underground
- 2. Tubing for water or gas
- 3. An opening for air flow
- 4. A passage dug underground
- 5. To bend down low to pass inside a tunnel
- 9. A way through or under
- 11. To move slowly close to the ground
- 14. Part of a plant that grows underground
Down
- 6. A place to dig for minerals
- 7. An underground train system
- 8. A natural hole underground
- 10. Rails for trains or carts
- 12. A door or barrier in a tunnel
- 13. Protective covering, sometimes used in tunnels
- 15. A long corridor inside tunnels
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