| http://www.w3.org/ns/prov#value | - In some embodiments of the invention, a subterranean location is a location that is between 100 m and 3500 m below ground level, such as between 200 m and 2500 m below ground level, such as between 200 m and 2000 m below ground level, such as between 200 m and 1500 m below ground level, such as between 200 m and 1000 m below ground level and including between 200 m and 800 m below ground level.
|
