Dozens killed in cold lava mudslides on Indonesian island of Sumatra  The GuardianIndonesia: Floods and cold lava from Marapi volcano kill 37  BBC.comFlash floods and cold lava flow hit Indonesia’s Sumatra island, killing at least 15 people  9NewsDeath toll in Indonesian floods, volcanic mud flows rises to 41  Al Jazeera EnglishCold lava mudslides kill dozens as flash floods hit Indonesian island of Sumatra  ABC News