An Indonesian volcano known as the "child" of the legendary Krakatoa erupted on Thursday, spouting large amounts of molten lava. /VCG Photo

Anak Krakatau is a small volcanic island that formed in the ocean a half century after Krakatoa’s deadly eruption in 1883. /VCG Photo

The volcano spouted a plume of ash high into the sky in recent weeks and also shot out flaming rocks. /VCG Photo