Dvaleti (Georgian: ; also Tvaleti - თვალეთი) was a historical region in medieval Georgia. Its territory was comprising areas in the central part of the Greater Caucasus Mountains, between Mamison Pass and Darial Gorge. According to Vakhusthi Bagrationi Dvaleti was including several gorges, namely: Kasris-Kkhevi, Zramaga, Zhghele, Nara, Zrogo, and Zakha. Dvaleti was integral part of the Georgian Kingdoms throughout of their history, but after the Russian annexation of the Kingdom of Kartli-Kakheti, in 1859 Dvaleti was excluded from the Tiflis Governorate and incorporated to the Terek Oblast.