Part 1 – Columbia to Chickies Rock: Explore the geology of Chickies Rock, other areas on trail along Susquehanna River

Columbia is located within the Piedmont Lowlands Section or locally known as the Conestoga Valley.

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https://www.ydr.com/story/opinion/columnists/2018/03/15/take-geological-tour-northwest-lancaster-county-recreational-trail/427794002/