
Slate Ridge anchors this landscape along the Mason-Dixon Line, where the towns of Delta and Cardiff sit straddled across the Pennsylvania Maryland state border. The region's industrial character is defined by extraction, with the Funkhouser Quarry and several unnamed quarries following the geologic grain of the ridge. While the Old Railroad Grade marks a former transportation corridor, modern activity is centered around the scattered rural communities of Whiteford, Pylesville, and Dublin.
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