Sip back and explore Acadia National Park, a 47,000-acre coastal gem in Maine shaped by glaciers and tectonics. Discover Cadillac Mountain, rocky cliffs, sandy beaches, glacial landforms, and the fossil-rich Presumpscot Formation. From marine invertebrates to rare mammoth and walrus fossils, Acadia offers hiking, scenic drives, and insights into its dynamic geology, coastal evolution, and diverse ecosystems along the U.S. Atlantic coast.