South of the Adirondack Mountains along with the Exceptional Upland lies the boundary amongst crystalline and sedimentary rocks; abruptly, anything is different. The core of this sedimentary region—the heartland on the United States—is the great Central Lowland, which stretches for 1,five hundred miles (2,400 kilometres) from Ny to central http://atlas.dustforce.com/user/smith48sunesen