The Runes were very cleverly hidden. That was because they weren't Runes at all, but rather hidden away in the arrangement of the buildings. It didn't take Sylas long to see through it, but afterward, he had still been confused.
That was because the Runes themselves were nonsense. Normally, Sylas was quite confident in himself to see through them, but this time, even with Rune Essence, he didn't have an idea.
Until it clicked.
Coordinates.
The only reason Sylas was familiar with this was because he had seen similar Runes on his Planar Convergence Gate. They weren't Runes in the usual sense, but rather markers.
What Sylas didn't know was that this was a special Rune language used for teleportation and things of the like. It was a special class of Runes that could only be used by spatial Professions, and unsurprisingly, it was a rare profession.