Footage captured by a local resident in Derna, Libya, on Monday, September 11, shows debris, mud, and damaged buildings left after the catastrophic flooding that killed over 5,300 people.The dams along the Wadi Darnah River failed when Storm Daniel hit Libya on Sunday, causing much of Derna to be swept away, according to the Red Crescent, which was providing emergency support in the area.On Wednesday, September 13, Mayor Abdulmenam al-Ghaithi told Al Arabiya television that the death toll in Derna could rise as high as 20,000.Local @nankamal1 told Storyful she shot the videos to capture “the horror of the view.” Credit: @nankamal1 via Storyful