Egmont [Taranaki]

Grass-covered conical hills dot the plains around Mount Egmont, on New Zealand's North Island. Small hills such as these, often located in lowland areas well beyond the flanks of a volcano, were once thought to be cinder cones or small secondary vents produced by explosions when a lava flow passed over a body of water. They now are known to be hummocks of massive debris avalanches produced by volcanic landslides. Debris-avalanche deposits originating from repetitive collapse of Egmont surround the volcano to distances of about 40 km.

Type/Process: Volcanic Landslide
Volcanic Status: Radiocarbon
Image Number: 016-004
Photographer: Don Swanson, 1984 (U.S. Geological Survey)
Summit Elevation: 2518 meters
Latitude/Longitude: 39.30 S / 174.07 E
Timeframe: Last known eruption 1700-1799
Region: New Zealand to Fiji