The First Stone Builders
In these early days of human civilization, while urban communities were not as widespread in western Europe as they were in Mesopotamia, in the former you could find many megalith constructions. The purpose of these large stone structures still mystifies but archaeologists have formulated some ideas about their uses: possibly they were erected for astronomical observations or to serve as communal tombs for the upper classes. They were likely also used to claim land. More than 500 of these sites have been documented in Ireland alone. There were three different types of these massive stone structures: menhir, dolmen, and cromlech.