For Farming– Volcanic soil ( ash & lava) is the most fertile soil and produce high yields. Farming usually done on the slope which are terraced. Example- Java, Indonesia Some of the best farmland.
For Mining– Volcanic areas are rich in mineral resources such as sulphur, copper and tin. Example, Bougainville ( Papua New Guinea) the world’s largest copper mines.
For Geothermal Power– Steam from the hot springs can be generated electricity. Example- New Zealand, numerous geothermal power station.
For Tourist attraction– The famous geyser, for example, in USA the Old Faithful, Yellowstone National Park. In Japan, Kagoshima famous for sand bathing.