As the land above the magma chamber collapses, immense gray clouds called pyroclastic flows burst out horizontally all around the caldera.
As the land above the magma chamber collapses, immense gray clouds called pyroclastic flows burst out horizontally all around the caldera.
当岩浆库上方的陆地崩陷，称为火山碎屑流的巨大灰色云雾，会突然由火山臼的周围向外水平散开。