Characteristics in tunnel projects there are two Concrete Trench project area is suburban trains extended East (Missing Link), and the southern route through the area tunnel Hua Hin airport.
Look in the tunnel project Concrete Trench are two of the project is to expand the eastern suburban railway (Missing Link) and a route through the tunnel Hin Airport.
The tunnel project in a Concrete Trench is 2 of is the suburban railway project to expand the East (Missing Link). The southern route through the tunnel and Hua Hin airport.