Hi guys, Welcome to the Advanced Video Search Engine, and you are watching 2022. Switzerland. The Gotthard tunnel. 16.9 km. Don’t miss this it.. That video is uploaded by Swiss Travelling - ST at 2022-09-26T22:54:47-07:00. We are promoting this video only for entertainment and educational purpose only. So, I hope you like & enjoy it. [2AjsVPrgvyg]