Ligna system

The Ligna system was first mentioned in the 2009 reference book The Essential Atlas, written by Daniel Wallace and Jason Fry, which placed it in grid square P-4.

Behind the scenes

The Ligna system was first mentioned in the 2009 reference book The Essential Atlas, written by Daniel Wallace and Jason Fry, which placed it in grid square P-4.

Sources

  • The Essential Atlas

Appearances