Sít’ Eeti Geeyí, bay in place of the glacier (Glacier Bay) experienced the most dramatic Little Ice Age (~1550–1850AD) in the world. The province was covered by mile-deep ice in the upper reaches, sloping smoothly down to a berg-spewing glacial terminus in Icy Strait (a name no longer descriptive).

During the past 2 centuries many tidewater glaciers have receded onto land. Recolonizing plants and animals followed, and after them, indigenous sealhunters, scientists and tourists. Today, ice covers 700 square miles of a land surface of 2,619 square miles or 27% of the province.

Surficial geology of lower Glacier Bay, based on IfSAR bare earth

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