Rockyside was a hillside community just north of New Cumberland along what was then Route 66, where mining and brick making families lived and many workers, including Poles and Slavs, came to labor in clay mines and brickyards. In 1850, a large wooden barracks was built to house 200 single men, and as the brickyards expanded, the Mack Company built single and duplex family homes along with spring houses, outhouses, and small gardens. A Catholic church was built in 1904, a schoolhouse followed, and three teachers taught all eight grades until the school closed in 1938 and students were sent to New Cumberland. During the 1930s and 1940s, families began moving into town, by 1950 the hillside was abandoned, and in 1959 the department of highways plowed under the community and its structures to build a new highway, replacing Route 66 with Route 2. The hillside is now overgrown, concealing partial brick remains of homes and the old school. The Black Stone Church, a Presbyterian church built in 1887 and dedicated in 1889, replaced an earlier brick church building in New Cumberland that had been built in 1855. Made of native white sandstone from Luke's stone quarry on nearby Hardin's Run Road, its stones were fitted by hand with very little mortar. Its first pastor, Reverend Smith F. Grier, served for 40 years. Between 1904 and 1908, a pipe organ was installed with assistance from a gift by Andrew Carnegie. A stone manse was added in 1930, a basement with a kitchen and meeting rooms in 1938, the upstairs auditorium was converted into classrooms in 1962, and the basement was remodeled into Fellowship Hall that same year. Carillon Chimes were added in 1973 and dedicated to Dr. Swaney, whose trust fund helps support the church. In 1998, the church dedicated the Smith F. Grier Museum to preserve its history. It remains part of the community, celebrates its heritage each spring with an outdoor concert and a calling of the clans, belongs to the Upper Ohio Valley Presbytery and the Presbyterian Church U.S.A., and has welcomed twenty-one different pastors over more than one hundred years while remaining an important local landmark.