Mackay Falls is a 25-metre cascade waterfall in Fiordland, on the Milford Track. It is the first waterfall visitors see on the fourth day of the walk, and it is reached by a swing bridge and an easy side track to a viewing platform. Bell Rock is nearby. The only way to reach the falls is to walk the Milford Track, which takes four days. From Dumpling Hut it is about 1 to 1.5 hours' easy walk, and from Boatshed Hut it is about 2 minutes' walk. Huts must be booked in advance through DOC, and transport is needed from Te Anau Downs at the start of the track and from Milford Sound at the end.