It is possible to find odd streches of track in Thailand whitch do not connect with the main network. My friend introduced me to the Mae Klong- Mahachai railway witch runs between
Wong Wian Yai in Thonburi, West Bangkok and Samut Songkhram on the Gulf of Thailand. Orginally constructed as a private line to take sea produce from the fishing ports of Samut Sakhon and Samut Songkram to the markets of Bangkok, it later became part of the State Railway of Thailand, though it was never connected to the rest of the network.
This little known line has great charm, passing through unspoilt countryside, and apparently terminating in the middle of the fresh food market in Samut Sakhon (Mahachai).
Ticket price for one way ( app. 1 hour ) is 10 Baht !!!!
If you been there have a lunch at the Port's seafood restaurant.
Taxi back to Bangkok app. 300 Baht.
Have fun !
For further information see also Mahachai Railway