According to a report by Business Insider, Indonesia ordered planes to avoid the country's airspace after one of its volcanoes partially collapsed, spewing volcanic ash into the atmosphere and triggering a devastating tsunami earlier this week. On Saturday, a crater on the Anak Krakatau volcano collapsed, causing an underwater landslide that sent waves up to 16 feet high crashing into coastal regions on the Sunda Strait between the islands of Java and Sumatra.
