| UPDATED: 18:03, Tue, Mar 9, 2021
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The caldera gets its nickname due to its ability to inflict global devastation during its most violent eruption – something that has happened three times in the past – 2.1 million years ago, 1.3 million years ago and 640,000 years ago. The system is constantly monitored by the United States Geological Survey (USGS) for any changes and there has not been a major eruption in 70,000 years. Despite this, there have been many unsupported claims over the years that the supervolcano is “overdue” an eruption – something Dr Poland addressed recently.