The Cossey Massey Loop at the northwest end of the Hunua Regional Park and range is a superb half-day hike, arguably one of the best in the Auckland region. This is due to the variety of experiences you get within a single hike.
The loop takes about 3 hours, including a visit to Hunua Falls. The walk rises through the Cossey Gorge and crosses the Cossey Reservoir dam. The ridge above the dam provides viewpoints of the reservoir, and the walk takes you through beautiful native forest. This includes a stop near the highest point in a group of reasonably mature kauri trees, perfect for a break. Overall, it’s about a 200-metre climb.
You can start from Hunua Falls car park, head across the footbridge and follow the signs, or park near the Cossey Reservoir Dam. Be mindful that Hunua Falls are accessible and popular with locals on weekends and public holidays.