Caucasus postcards Caucasus postcards 1. Georgian military road. Gorge of the river Terek in the Baltic gate 2. Caucasus. Dagestan. George bridge over the river Kara-Kuysa 3. Station Kazbek winter 4. Caucasus. Kunachhirskoe gorge The Caucasus, also Caucas or Caucasia (for endonyms, see below), is a geopolitical region at the border of Europe and Asia, and situated between the Black and the Caspian sea. It is home to the Caucasus Mountainsread more 840. Caucasian mountains 839. The Views Of The Caucasus. Georgian military road. Terek gorge. Near the station of Kazbek, 1910