Today, the broken petroglyphs rest at a laboratory in Jefferson Patterson Park and Museum, a member of the Chesapeake Bay Gateways Network. The park is home to the Maryland Archaeological Conservation Laboratory, where archaeologists and volunteers have preserved, catalogued and archived more than 7 million state and federally owned artifacts from all areas of Maryland. The park grounds encompass more than 70 high-quality archaeological sites that document Native American communities, colonial farming and the experience of enslaved African Americans. At Jefferson Patterson Park, Native American sites have produced the oldest artifacts-stone spear tips and axes more than 7,000 years old. read more