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Great Basin National Park Glaciers / Glacial Features
Great Basin National Park supports several rock glaciers and glacial features from past glaciation. The largest rock glacier can be found in in the Wheeler peak cirque. This glacier was first documented in the the Fifth Annual Report of the United States Geological Survey, 1883-1884. In the 1950's the cirque still contained an active glacier with an active front, neve, bergshrunds, crevasses, and a small moraine. It is unknown exactly when the conversion from active glacier to rock glacier occurred.
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.