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In page Esopus Creek:
"The Esopus was one of three valleys that trees followed into the Catskills, as revegetation of the mountain slopes took place in the glaciers' wake. First to come were the boreal species, such as balsam fir, that today persist only on the summits of the range's higher peaks. Next were the northern hardwoods, primarily beech, birch and maple species, that dominate much of the Catskill forests today. Last were southern hardwood species, mostly oak, hickory and American chestnut, probably following the Indians as they migrated north. Most of the chestnuts died in the chestnut blight of the early 20th century. Catskill forest historian Michael Kudish found that other southern hardwood species can be found in the Esopus valley all the way to Oliverea, a mile or so below the creek's source.[4]
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