Homes and property can be consumer and the loss of life can be tremendous. Sometimes its the after effects of the eruption that cause so much damage. Ashes and soot can float in the air for months, affecting the sunlight. Toxic gases can kill animals and plants. Huge mud slides can form on the sides on the volcano, bringing a rush mass of dirt, trees and soil towards residencies and cities.
Volcanic eruptions are one of natures great hazards.
They can't be stopped or controlled. People just have to respect the awesome power with which the fire mountains can send rivers of fire down the hillside.