You know,I always thought that by this time,the Caucasus was divided between the Russian Empire,the Ottomans and Persia/Iran,or are there sources that state otherwise?
It's complicated. A lot of information on these mountainous Caucasian polities is rather poorly attested. It is known however that chunks of Dagestan under the later Caucasian Imamate remained independent until 1859 and that Circassia wouldn't be fully under Russian control until as late as 1864.