Kyzylkala,[1] or Kzylkala[2] (Red Fortress), was a medieval trading settlement on the Silk Road, situated close to the mountain Sherkala in Kazakhstan.
This decay was reinforced by changes in the level of the Caspian Sea, which caused caravans to take a new route, bypassing Kyzylkala.
[1] According to al-Khwārizmī Kyzylkala was founded by the invading Sheikh of Khorezm Astsyz after conquering Mankashlak in 1138.
Remains of several buildings including fortifications, an extensive caravanserai, mausoleum and three ovens have been identified.
Remains of Oguz, Khorezm pottery and stone talc vessels originating from Sultan-Uizdag mountain have been found.