Wairere Boulders is a privately-owned nature reserve and tourist attraction at Horeke in the south Hokianga region of Northland, New Zealand.

Wairere Boulders was initially developed as a tourist attraction by Felix and Rita Schaad, a couple originally from Switzerland who owned the property from the 1980s.

Many of the boulders have deep solution basins and fluting formed on their surfaces as they very slowly slid down the valley sides - a particularly good example of the relatively rare phenomenon of karst formation on basalt (sometimes known as proto-karst).

[10] Usually karst landforms are formed by solution of calcareous rocks (e.g. limestone and marble) by mildly acidic percolating water.

Humic acid seeping down the sides of the boulders has, over thousands of years, dissolved deep, near-vertical flutes out of the hard basalt.