Текст про извержение вулкана краткое и что происходит рядом на языке

Volcano eruption — the process of emission of a volcano to the earth's surface hot debris, ash, outpouring of magma, which islevsel on the surface, it becomes lava. The eruption may have a time period of from several hours to many years.
Volcanoes belong to geological disasters, which can lead to emergency situations. In some cases it may even be the risk of natural disasters.