Reclaimed and Recycled
Yes, the extremely long tunnels on konkan railway line.Which tunnels?? I havent seen any tunnels on the roads (NH 17 / NH 4 or within the Konkan region), apart from the Mumbai - Pune Expressway ones. Are you talking about the Konkan railway tunnels?
Work of art.
Even the mountainsides, very landslide prone, are reinforced using steel cable nets. If we had such nets on rohtang, landslides would be history.