page_title: Glacier Bay Basin
section_title: Gilman Glacier
hierarchical_section_title: Glacier Bay Basin / Landmarks / Gilman Glacier
caption_attribution_description: English: Gilman and Johns Hopkins Glaciers - Glacier Bay National Park
context_page_description: Glacier Bay Basin in southeastern Alaska, in the United States, encompasses the Glacier Bay and surrounding mountains and glaciers, which was first proclaimed a U.S. National Monument on February 25, 1925, and which was later, on December 2, 1980, enlarged and designated as the Glacier Bay National Park and Preserve under the Alaska National Interest Lands Conservation Act, covering an area of 3,283,000 acres. In 1986, UNESCO declared an area of 57,000 acres within a World Biosphere Reserve. This is the largest UNESCO protected biosphere in the world. In 1992, UNESCO included this area as a part of a World Heritage site, extending over an area of 24,300,000-acre which also included the Wrangell-St. Elias National Park, Kluane National Park and Tatshenshini-Alsek Park. Part of the National Park is also designated a Wilderness area covering 2,658,000 acres.
  Current glaciers cover an area 1,375 square miles and accounts for 27% of the Park area. Up until the early 1700s the area was a large single glacier of solid ice. It has since retreated and evolved into the largest protected water area park in the world.
context_section_description: Gilman Glacier got attached to Johns Hopkins Glacier sometime in 1990. In the following decade, the two glaciers merged and de-merged several times. However, in 2000 it was again attached to Johns Hopkins glacier and the two together are stated to be advancing along the 150-to-200-foot (46 to 61 m) steep ice face.
caption: Gilman and Johns Hopkins Glaciers in August 2016
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