About: http://webisa.webdatacommons.org/3118524

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	But the most productive area turned out to be in northern Etruria, in the range known as the Catena Metallifera (???Metal-Bearing Chain???), from which copper and especially iron were mined in enormous amounts.
http://www.w3.org/ns/prov#wasQuotedFrom	britannica.com