Bunker Hill had an easy slope to the isthmus, but was quite steep on
either side, having, in fact, control of the isthmus, as well as
commanding a full view of Boston and the surrounding country. Morton's
Hill, at Moulton's Point, where the British landed, was but thirty-five
feet above sea level, while Breed's Pasture (as then known) and Bunker
Hill were, respectively, seventy-five and one hundred and ten feet high.
The Charles and Mystic Rivers, which flanked Charlestown, were
navigable, and were under the control of the British ships-of-war.