The Sulak Canyon (Avar: Сулахъ кӏкIал, Russian: Сулакский каньон) is a steep-sided deepest canyon in Europe carved by the Sulak River in Dagestan, Russia.[1] The Sulak Canyon is 53 kilometres (33 mi) long, and attains a depth of over a mile (1,920 meters or 6,300 feet).[2] It is 63 meters deeper than the Grand Canyon in the US and 620 meters deeper than the Tara River Canyon in Europe.[3]