Nature and EnvironmentLava in slow-mo00:50This browser does not support the video element.Nature and Environment06/22/2015June 22, 2015On April 22, 2015, the Calbuco volcano in Chile erupted. German filmmaker Martin Heck was there to witness the spectacle. From his safe perch 20 kilometers away, he shot time-lapse footage of this once-in-a-lifetime natural event.Copy linkAdvertisement