Moderate difficulty suitable for most players
Subterranean Transit Engineering Enigma
Challenging puzzle for experienced crossword solvers
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Across
- 1. Mechanical mole carving through earth’s ancient crust
- 2. Rail yard sanctuary where rolling stock rests and revives
- 4. Communicative ballet managing train movement and safety
- 6. Dubbed ‘double-decker,’ maximizes passenger capacity vertically
- 9. Hubbub zone where travelers merge, buy tickets, or wait
- 11. Foundation for rails, absorbing forces and maintaining alignment
Down
- 3. Common colloquialism for underground rapid transit
- 5. Essential system sustaining breathable subterranean air quality
- 7. Operator’s domain steering the train through labyrinthine veins
- 8. Stepwise conveyance easing depths’ pedestrian ascent
- 10. Safety mechanism ensuring trains fit tracks without conflict
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