2,100-year-old human footprints called "Huellas de Acahualinca"Managua is also home to ''Museo Sitio Huellas de Acahualinca'' (the Museum of Acahualinca), where the Ancient footprints of Acahualinca, fossilized Paleo American footprints made 2,100 years ago, are engraved in volcanic ash. The museum is located in west Managua in the Acahualinca neighborhood. In addition to the footprints, the museum also displays artifacts found in other localities around the country. Artifacts such as mammoth footprints, pre-Columbian tools, a skull from León Viejo, and a small collection of pottery, among other archeological objects.