Another unique spot in the Whirinaki Forest is the Arohaki Lagoon, a rainfed waterway which is home to a number of rare birds.
Access is via River road, off Old Te Whaiti Road, to the Arohaki Lagoon carpark.
You should have a reasonable level of fitness for the four km walk, as the terrain ranges from steep uplands to flats.
Birdlife includes rare species, especially the whio (blue duck), North Island kaka, red and yellow crowned kakariki, kiwi and kereru.
The track passes through impressive tawa/podocarp forest.
The rain-fed lagoon is surrounded by towering kahikatea and is often alive with frogs - and in times of drought, appears to dry up. Even so, it remains an interesting place to visit.