The 6,758 - metre - long ( 4.199 mi ) tunnel begins at the Frudalen farm , goes through the mountains under the Frudalsbreen glacier .
The 6,758 - metre - long ( 4.199 mi ) tunnel exits at the small Berge farm area .
The 6,758 - metre - long ( 4.199 mi ) tunnel begins at the Frudalen farm , goes through the mountains under the Frudalsbreen glacier , and exits at the small Berge farm area .