Mount Sinabug in Indonesia's North Sumatra erupted on August 10.<br /><br />Footage from Berastagi, Karo Regency shows the five-kilometre-high ash cloud that has filled most of the sky with the volcanic substance.<br /><br />A level three alert was issued after the mountain was recording volcanic activity in recent days.<br /><br />The footage was filmed by @zwqzwq93.
