The Whanganui Inlet is a long and wide inlet on the northwest side of Golden Bay in the South Island. It has been designated as a marine reserve since the 1990s.
From Pakawau Bush Road, turn left onto Dry Road. This largely follows the southeast native forest-clad side of the inlet for about 20 km, including along the boundary of Kahurangi National Park. About 15 km along on the left, you will see the access road to the Knuckle Hill Track. Allow 90 minutes each way if you want to do this.
There are several viaducts over sections of the inlet, generally with enough room to stop safely. On the day, the low cloud and rain made it feel even more remote and a touch magical.