Volcanoes can look like small mountains or hills. A volcano is an opening in the Earth’s crust that allows magma, hot ash and gases to escape. Magma is molten rock - rock that is so hot it has ...

Kilauea volcano in Hawaii is erupting with fountains ... of toxic volcanic gas — you can watch the eruption live in the video above. The U.S. Geological Survey (USGS) is live-streaming the ...