@dailymail: An enormous cloud of black ash billowing 50,000 feet into the sky, plunging an entire city into darkness in the middle of the day and blanketing it in a choking layer of dust. This is what happened the last time Mount Spurr, an 11,000-foot-tall volcano in Alaska, erupted in 1992. Now, experts say it is set to blow again. Mount Spurr has had heightened activity over the past few months, including numerous small earthquakes, ground deformation, and gas and steam emissions. Mount Spurr sits just 81 miles from Alaska's most densely populated city, Anchorage, which is home to nearly 300,000 residents, who are at risk if the volcano does errupt. 🎥 R.G. McGimsey Footage/Alaska Volcano Observatory #volcano #alaska #usa #risk #earthquake #scary