Volcanoes The most dangerous things when volcanoes explode are the lava which is more than 1000 degrees, the deadly ash which caused Mass-extinction to a dinosaur. If you breath in the gas you might be suffocated to death. < suffocated means canâ&#x20AC;&#x2122;t breathe so die> The volcanoes only doesnâ&#x20AC;&#x2122;t harm people it even creates hot spring and it creates a new island which it makes more creatures can live there. Lava is from 50km to 200km from the ground. Lava is very red and extremely hot.