Аскиль trn.Askil, Tatar: Ашлы; pronounced [ʌʃˈlɯ]) was a mysterious medieval Volga Bulgarian town.
The prince of Vladimir Yuri Vsevolodovich sent the expedition to sack Ashli under his brother, Sviatoslav.
The Russians under prince Sviatoslav, his brother Yaroslav and voyevoda Yeremey Glebovich reached the city by the Volga on their boats.
The Rostovans formed the right flank, the Pereslavleans the left, the prince and the Muromeans stayed in the center.
However the fire, smoke and wind were so strong, that the Russians were forced to retreat and to enter the city from another side.
The Bogodashkino ruins were found in 1909 by Ğäynetdin Äxmärev and the excavations took place in 1949-1950 under Nikolay Kalinin.
[1] Some Cäğfär Taríxı-based versions place Aşlı in the modern Kazan and state the victory of Bulgars under Gabdulla Chelbir and defeat of the Russians and the Udmurts.