21. Both facilities were served by an underground railway tunnel and underground ammunition storage galleries. 22. Or do you mean an underground railway like the London Underground in the UK? 23. The firm also advised on proposals for underground railways in Sydney, Africa and Russia. 24. Since 1975, it has been a major tourist attraction, featuring its own underground railway . 25. Instead, they were to serve as fine distributors and feeders for the underground railway . 26. The Kolkata metro is the country's first underground railway . 27. Its construction was the beginning of the underground railway system concept in New York City. 28. His group went down through the underground railway tunnels and made it to Friedrichstrasse station. 29. The carriages of the London underground railway were constructed and manufactured in the R�ba company. 30. It is a partial underground railway that used to bring luggage up to the castle.
