Ghalajeh tunnel

Ghalajeh tunnel (Persian: تونل قلاجه) or Arba'een tunnel is a tunnel located in Eyvan County in Ilam Province in Iran. It connects Ilam Province northward to Kermanshah Province. It is the second longest tunnel in Iran after Kandovan tunnel. It is part of road 17 (Iran).
See also.
Eslamabad-e Gharb
Gilan-e Gharb