The fiord Captain Cook was too scared to enter

Doubtful Sound, one of Fiordland's most spectacular fiords, gets its slightly odd name from an act of caution rather than exploration. When Cook charted the coastline aboard the Endeavour in 1770, he spotted the narrow entrance but judged it too risky to sail in without being certain there'd be enough wind to sail back out of the steep-sided inlet. Rather than take the gamble, he simply logged it as 'Doubtful Harbour' and moved on.

It wasn't until Spanish explorer Alessandro Malaspina's expedition arrived in 1793 that Europeans finally ventured inside, and the name was later softened to Doubtful Sound. Today the fiord is roughly three times longer than the more famous Milford Sound and is reached only by a boat-coach-boat journey across Lake Manapouri and over Wilmot Pass, which keeps visitor numbers low and the wilderness feel intact.

For travellers, Cook's caution turned out to be tourism's gain: Doubtful Sound remains one of the quietest, least-visited major fiords in the world, home to a resident pod of bottlenose dolphins, fur seals, and penguins, with far fewer boats than Milford on any given day.

**Q: Why didn't Captain Cook sail into Doubtful Sound?** A: In 1770 Cook feared his ship might not get enough wind to sail back out of the narrow fiord once inside, so he stayed offshore and marked it 'doubtful' on his charts. It took another 22 years before Europeans, on the 1793 Malaspina expedition, actually entered the fiord.

**Q: How do you get to Doubtful Sound today?** A: Visitors travel by boat across Lake Manapouri, then by coach over the Wilmot Pass road, before boarding a cruise vessel on the fiord itself, a journey of about 3 hours each way from Manapouri. This multi-stage access is a key reason Doubtful Sound sees far fewer visitors than Milford Sound.