More than 800 earthquakes have now been recorded at the Yellowstone Caldera, a long-dormant supervolcano located in Yellowstone National Park, over the last two weeks – an ominous sign that a potentially catastrophic eruption could be brewing. However, despite earthquakes occurring at a frequency unseen during any period in the past five years, the US Geological Survey says the risk level remains in the “green,” unchanged from its normal levels, according to Newsweek.