Doubtful Sound is inaccessible by car, so there's only one tour company that runs its tour boats here. Even the buses that drive over the pass that connects Lake Manapouri to Doubtful Sound were brought in by barge.

Captain Cook thought it was doubtful that if he sailed into the sound he could sail out again. Thus the name.

Doubtful Sound is inaccessible by car, so there's only one tour company that runs its tour boats here. Even the buses that drive over the pass that connects Lake Manapouri to Doubtful Sound were brought in by barge.

Captain Cook thought it was doubtful that if he sailed into the sound he could sail out again. Thus the name.