http://sq.wikipedia.org/wiki/Shpella_e_Gadimes

Shpella e Gadimes is a tunnel located in Lipjan of Kosovo. It was discovered by a Kosovar named, Ahmet Asllani. It is 1500 meters long. In the summertime, the tunnel stays at a rate of 11-13 degrees celsius.

 

 

http://www.lotsberg.net/data/rail_eu.html

The Neuberg tunnel is located Fulda-Wurzburg. It opened in1988. It is 1,945 meters long.

http://www.lotsberg.net/data/rail_eu.html

Sopotnica is a tunnel in Serbia. It is located in the capital of Serbia; Beograde (Belgrade).  It is 1,942 meters long.