Mount Hobson (Hirakimata) Volcano, Auckland Volcanic Field,
New Zealand.
The highest peak on Great Barrier Island.
Volcano with lava flow which breached cone.
Little geologic data that I can find.
Probably erupted between 20,000 and 50,000 years ago.
Stamp below was issued on December 4th 1974
(Courtesy of Ed Benson)
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