Mount Greylock topographic map
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Mount Greylock
Northern hardwood forest characterize lower and mid-elevations, while upper slopes are covered with balsam fir and red spruce as well as American mountain ash. About 555 acres (225 hectares) of old growth forest have been inventoried within the Greylock Range, including tree specimens up to 350 years old. On the western slope was a 120-foot-tall (37 m) red spruce.