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Hagerstown has a distinct topography, formed by stone ridges running from northeast to southwest through the center of town. Geography accordingly bounds its neighborhoods. These ridges consist of upper Stonehenge limestone. Many of the older buildings were built from this stone, which is easily quarried and dressed onsite. It whitens in weathering and the edgewise conglomerate and wavy laminae become distinctly visible, giving a handsome and uniquely “Cumberland Valley” appearance. Several of Hagerstown’s churches are constructed of Stonehenge limestone and its value and beauty as building rock many be seen particularly in St. John’s Episcopal Church on West Antietam Street and the Presbyterian Church at the corner of Washington and Prospect Streets. Brick and concrete eventually displaced this native stone in the construction process.