What made this perfect circular forest that surrounds 8,261ft ‘Mount Doom’?

The lush green forest is almost a perfect circle (Picture: NASA)A volcano in New Zealand which once doubled as Mount Doom in Lord of the Rings has a mysterious perfect circle around it – but what caused it?
Mount Taranaki sits at 8,261 feet tall on New Zealand’s North Island, but is surrounded by an almost perfectly circular lush green forest.The dense forest is filled with mangled kamahi trees, adding to the creepy allure of the volcano.The mangled trees within formed due to large