About: http://webisa.webdatacommons.org/314354534

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	Instead of a pipe, I suppose a slopped trench could be dug, filled with larger rocks, and covered with wood or other material to keep the trench from filling with dirt.
http://www.w3.org/ns/prov#wasQuotedFrom	survivalistboards.com