Hello.
The Lieråsen tunnel is a double-tracked tunnel between Asker station and Lier station in Norway. It opened in 1973.
https://en.wikipedia.org/wiki/Lier%C3%A5sen_Tunnel
Images:
https://live.staticflickr.com/…59609271_6d9563562c_b.jpg
https://jernbane.net/uploadg/Liertunnelen.jpg
https://jernbane.net/uploadn/4077Lier_sen_tunellportal.jpg
https://mapio.net/images-p/35060797.jpg
https://www.banenor.no/content…18e/vasking-av-tunnel.jpg
https://www.banenor.no/content…nnel-fra-lier_cru-780.jpg
https://www.jernbanedirektorat…59c8645/lierasen1-900.jpg
https://upload.wikimedia.org/w…Tunnel_TRS_070330_020.jpg