Glacier Bay-Admiralty Island Biosphere Reserve

UNESCO Biosphere Reserve, inscribed 1986, in United States of America. This biosphere reserve in south-eastern Alaska consists of two units, Glacier Bay and Admiralty Island. Glacial advance and retreat, occurring since the mid-Miocene, have shaped the area’s landscape. The latest episode of ice recession began only 200 years ago, and the ice within Glacier Bay has withdrawn about 95 km during this period.