There is no way for private cars to drive directly to Doubtful Sound (like you can do for Milford Sound), so Doubtful Sound Cruise, either a full day or overnight, needs to be booked from Te Anau or Queenstown. The cruise consists of a bus tour from Te Anau/Queenstown up to Manapouri Lake, then a boat tour crossing the Manapouri Lake, then (optional) a guided tour to the underground power station, then again bus through the Wilmot Pass, and at the end you'll do 2 hours or overnight cruise by boat along the Doubtful Sound.

You'll see Browne Falls on the left-hand side a few minutes after the cruise starts. The waterfall drops from the mount which is 857 meters high and descends a series of leaps, sometimes disappearing and appearing again.

Unofficially it's the highest waterfall in New Zealand, but unfortunately, it's not as popular as its competitor Sutherland Falls.

Many thanks to Elliot Kensington, Air Wakatipu pilot, for a couple of great waterfall's photos.