This is symbolic of the network of ley lines on our earth. According to this concept, a network of energy flows spans the entire earth, and past civilizations built their sacred sites on the nodes of this network, such as Stonehenge, the pyramids of Gizah or Ankor Wat. Want to get your mind blown? I always found the maps of the Leyline network strange. Until I saw them in a projection that is closer to our actual earth.