I have relatives in Kuban, they look exactly the same as we, North Westerners, but more tanned because of diff climate (obviously, no?). Their skin is more adapted to the sun since they and their ancestors have lived there for generations. Oh, and I mean European ethnic groups: ethnic Rus' (Russians, Belarusians, Ukrainians), Germans (there are some in that region) and a few others.

There are also "indigenous" ethnic groups like North Kavkazians (Chechens, Dagestanians etc), Armenian, Azerbaijan and Georgian immigrants and so on. They look middle eastern of course (Semitic/Turkic).

They look like to something middle between common nothern people and Romanians&Moldavians, usually

jet black hair, brown eyes, a little swarthy skin (at least face), growth is slightly above average, body is average. The nearly to Caucasus, the larger nose, more angular cheekbones, wider eyes and swarthier skin. The nearly to Romania, the swarther skin and more curly hair.

Something like that, if speak about natives.

Middle-eastern - darker skin, curly hair, dark eyes. Kinda like Iranians or Turkish people.

Human.