Mt Tongariro's eruption

Mt Tongariro erupted for the first time in over a century at 11.50pm on August 6, 2012, raining ash onto many Central North Island roads and homes.

A view of hydrothermal activity at Mt Tongariro following last night's eruption. Photo / Supplied

Image 1 of 18: A view of hydrothermal activity at Mt Tongariro following last night's eruption. Photo / Supplied