Reconstructed vegetation cover at the Last Glacial Maximum period ~18,000 years ago, describing the type of vegetation cover present, based on fossil pollen samples recovered from lake and bog sediments.
Map generated from shapefile published by Ray, N. and J. M. Adams. 2001, “ A GIS-based Vegetation Map of the World at the Last Glacial Maximum (25,000-15,000 BP). Internet Archaeology 11. ”

Source: http://intarch.ac.uk/journal/issue11/rayadams_toc.html
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