Ōpārara Arch

Ōpārara Arch is a natural limestone passage in Kahurangi National Park carved by a river flowing beneath towering rock walls on both sides. The formation creates a tunnel-like opening where water continues to flow, surrounded by native forest that gives the area a secluded feeling.

Limestone formations in this region were first marked on maps in the 1880s during early surveying work in the Karamea area. Later, gold seekers and hunters explored these caves, gradually revealing the extent of these underground passages to the wider world.

The arch holds significance as a natural landmark that draws visitors seeking to experience the raw power of limestone formations shaped by water. People come to witness how the river continues its work beneath the stone, connecting them to the geological forces that shaped this region.

A half-hour walking trail through the forest leads to the arch with wooden steps that help access an elevated viewing area within the formation. The ground can be slippery due to moisture, so wear sturdy footwear and take your time navigating the built structures for safety.

The ceiling of the passage holds numerous stalactites that hang like frozen icicles, shaped by thousands of years of dripping water. The river flowing beneath has a distinctive brown color caused by natural compounds leaching from the surrounding forest into the water.

Location: Buller District

GPS coordinates: -41.15111,172.19083

Latest update: December 14, 2025 13:08