Hurupaki Mountain is a high scoria cone whose associated basalt lava has been dated at 310,000 years old.

Hurupaki Mountain is a steep sided, partly bush-covered scoria cone.

It is 1–2 km in diameter and 349 metres (1,145 ft) high[1] , and has been extensively quarried on the west side.

Hurupaki Mountain was once a large Māori pa with a considerable number of pits and terraces.

The pa has about 70 pits on it; most of these were probably used as underground storage for kumara and berries, grown on the slopes of the hill.