Ash Hill

Ash Hill is a tuff cone volcano in Auckland with an explosion crater spanning roughly 150 meters across and rising about 34 meters above sea level. Surrounding industrial development has limited direct access to its geological features.

The volcanic formation developed roughly 31,800 years ago, forming during the same period as the neighboring Wiri Mountain. Radiocarbon dating has confirmed this ancient origin.

The hill's name comes from nearby Ash Road, which was named after local ash trees rather than from volcanic origins. This naming history is still reflected in how the area identifies itself today.

The site is surrounded by industrial development, so exploration is limited to designated observation points. Check ahead to find accessible viewpoints, as direct access to the crater area may be restricted.

Despite its modest appearance today, Ash Hill is one of the region's oldest volcanoes when examined through radiocarbon dating, a fact that often surprises visitors. This remarkable age contrasts sharply with its quiet, unassuming presence in the modern urban landscape.

GPS coordinates: -37.00258,174.86750

Latest update: December 14, 2025 14:24