He wanted particularly to visit the Georgian mountain tribes - Tush, Khevsurs, Ratchuelians and Svans - to discover if they shared a common mountain culture, and to test the old idea of the Caucasus as an impenetrable barrier from sea to sea.

He wanted particularly to visit the Georgian mountain tribes - Tush, Khevsurs, Ratchuelians and Svans - to discover if they shared a common mountain culture, and to test the old idea of the Caucasus as an impenetrable barrier from sea to sea.