Layers and layers of primarily felsic or intermediate-composition magma -- magma that is relatively rich in silica, sodium, aluminum, and potassium. These crystallize to form â¦ granitic rocks. These are the classic shapes of volcano that every school kid knows, known as stratovolcanoes or composite volcanoes.
The Battle of Bunker Hill took place on June 17, 1775, just a few months after the start of the American Revolutionary War. Boston was being besieged by thousands of American militia.
Bunker Hill, with an elevation of 110 feet (34 m), lay at the northern end of the peninsula. Breed's Hill, at a height of 62 feet (19 m), was more southerly and nearer to Boston. The town of Charlestown occupied flats at the southern end of the peninsula.