Tren A Las Nubes, Argentina -Most dangerous railway rout in the world
You can see a 217 km railway track in the above picture. It establishes connection between Salta in Argentina and Polvorillo in Chile. This railway path started in 1948, 27 years after the construction was started. Since then it is continuing its service. The whole structure is build 4200 m above sea level that make you feel that you are moving through clouds. You can visit 29 bridges and 21 tunnels, if you ride on the train for 16 hours, because it moves through those bridges and tunnels to cover 217 km long route.
@mgibson Thank you for not using bidbots on this post and also using the #nobidbot tag!