Grafton Volcano, Buried volcano in Grafton, Auckland, New Zealand
The volcano features a 600-meter diameter explosion crater filled with a solidified lava lake, reaching depths of at least 50 meters beneath the surface.
Discovered in 2010 through borehole drilling and building excavations, the volcano dates back approximately 100,000 years, predating the adjacent Pukekawa Volcano.
The volcanic site now hosts Outhwaite Park, where mature oak trees and dedicated garden spaces provide recreational spaces for local residents.
Located near Auckland Hospital, the volcano's fractured lava lakes form a substantial groundwater reservoir that supplies water to both the hospital and domain.
The volcano contains two distinct vents within its crater, positioned at Outhwaite Park and the eastern end of Auckland Hospital.
GPS coordinates: -36.86453,174.77040
Latest update: March 4, 2025 13:47
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