What volcanoes are a steep sided cone shaped hill that is created by the eruption of volcanoc ash cinders and bombs around the volcano's opening?

The volcanoes described are known as cinder cone volcanoes. They are characterized by their steep sides and conical shape, formed from the accumulation of volcanic ash, cinders, and volcanic bombs ejected during eruptions. These materials fall back around the vent, creating the cone structure. Cinder cone volcanoes are generally smaller than other types of volcanoes and can erupt relatively frequently.