Evidences of one of the oldest known glaciations have been found near the summit in the district of Hay. [Please select]
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More information is available about the Wisconsinan, or last, glacial age, than about the earlier ones, because the last glaciation in many montane areas destroyed evidence of earlier glaciations. [Please select]
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During Wisconsin time, climate probably fluctuated less than during previous glaciations; probably no montane environments, except cloud forest, were represented in the isthmus during the Wisconsin. [Please select]
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