Wrangell-St. Elias National Park and Preserve contains several of North America's highest peaks, including Mt. St. Elias (18,008 feet) and Wrangell Mountain (14,005 feet), an active volcano. From these mountains flow hundreds of glaciers varying tremendously in size. The Malaspina is one of the largest piedmont lobe glaciers and the Nabesna Glacier is one of the longest valley glaciers (over 40 miles long). Other glaciers terminate at tidewater and are known for their surging and retreating. Extensive ice fields also occur within the mountain ranges.
Maine ocean islands provide the only nesting sites for Atlantic puffins in the United States. Eastern Egg Rock in the midcoast region, Seal Island and Matinicus Rock at the mouth of Penobscot Bay, and Machias Seal Island and Petit Manan Island off the downeast coast provide habitat for more than 4,000 puffins each summer.