Part 1 | Two lesser known South Island destinations you HAVE to add to your itinerary ⤵️ This is Doubtful Sound in Fiordland National Park 🏞️ Doubtful Sound is the deepest and second longest fiord in the South Island - three times the length of Milford Sound and ten times larger. It’s also home to one of the southernmost populations of bottlenose dolphins. There are no direct roads leading there, so it can only be accessed by taking a boat ride over Lake Manapouri and a scenic coach tour throug