17th Thermador, 1836: According to this letter from Hyronomous, the dig at Chayi has revealed evidence of smoke, seeming to point towards a large fire damaging the center of the ruined compound and possibly leading to its eventual abandonment.
Beneath the soot, there are engravings that resemble Kusinne religious tattoos: geometric-numeric designs with meanings encoded numerically into their symmetric designs.
They have also found several dead ends apparently intended to mislead looters. Curiously, they appear to date to much later than the original ruins. Possibly second century, according to Hyronomous.