This is, without doubt, the hardest run in the Patapsco basin. Suddenly, as Piney Run crosses Arrington Road and begins to follow Marriottsville Road No. 2, with just a mile and a third left to its life, it becomes a whitewater terror, dropping 60 feet in a third of a mile. Scout this section carefully from alongside the road before putting on, looking especially at the first quarter mile, down to
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