sentences:  Four kilometers north the Avar Koysu joins the east-flowing Andi Koysu to form the Sulak River.To the south on the Avar Koysu is the village of Untsokul, the Irganay dam and the villages of Irganay and Zirani.West on the Andi Koysu are the rock fortress of Akhulgo and the villages of Ashitla and Igali.