Volcanoes are dangerous yet have their advantages. Volcanic eruptions are often accompanied by rocks, ashes and gases and lava flows which destroy what come their path forests, settlements, block streams and rivers and cause loss of lives. But these eruptions form fertile soils rich in minerals. Geothermal energy can be harnessed and there is potential tourist income. Metals and precious stones are found here and basalt rocks which are found can be used for construction.