South with the Adirondack Mountains as well as Excellent Upland lies the boundary involving crystalline and sedimentary rocks; abruptly, everything is different. The core of this sedimentary area—the heartland of the United States—is The nice Central Lowland, which stretches for 1,five hundred miles (2,400 kilometres) from The big apple http://mnogootvetov.ru/index.php?qa=user&qa_1=becker11smith