Pukeiti is one of the volcanoes in the Auckland volcanic field. The spatter cone is the smallest volcano in Auckland, reaching 30 metres (98 ft) above sea level, and has a shallow crater over 30 metres (98 ft) wide. The crater rim was quarried on the south and east side. Extensive lava poured out from this vent to form a lava flow field to the north and east. It is now part of the Otuataua Stonefields reserve.