About: http://webisa.webdatacommons.org/311427054

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	Apparently, the entrances to the tunnels were closed off by earthquakes or other natural disasters.
http://www.w3.org/ns/prov#wasQuotedFrom	birthright.net