Would you like to board a coach going in to an 11.3km single carriageway road tunnel of just 5 metres diameter in an infamous earthquake zone close to fault lines, and prone to landslips near the tunnel entrance due to the fragile nature of the geology?
Located in a country with extremely limited legislation relating to, and experience, of road tunnelling?
Would you worry about collapse, ventilation, escape routes, fire risks?
Coaches passing through the tunnel will still need to travel through major avalanche areas and the Homer Tunnel to get to Milford Sound so another tunnel won’t alleviate any risks, and carries additional major risk.
And that’s not even mentioning the risk to workers’ lives during the complex construction stages or maintenance.