Children play on donated clothing at a relief center after being evacuated from Sebesi Island in Kalianda, Lampung province on Thursday, following the Dec. 22 tsunami—caused by activity at a volcano known as the ‘child’ of Krakatoa—hit the west coast of Indonesia’s Java island. Indonesia raised the danger alert level for an erupting volcano that sparked a killer tsunami at the weekend, after previously warning that fresh activity at the crater threatened to trigger another deadly wave.