Mount Desert Island of Acadia National Park is a great granite outcropping created by magma flows of long ago. The ocean batters it creating magnificent cliffs towering over huge boulders, some ragged and sharp others polished smooth as they rattle around the rugged shore. Cadillac Mountain pokes up to it’s lofty 1530 feet. Pretty puny compared to many other mountains but amazingly impressive in this sea side setting.