Caucasus
The Caucasus Mountains are commonly recognised as a natural border between Asia and Europe. Countries in the Caucasus are considered to be in one or both continents, with Armenia and Azerbaijan considered transcontinental, and Georgia largely considered European.  The northern portion of the Caucasus is known as the Ciscaucasus and the southern portion as the Transcaucasus.  The highest peak in the Caucasus is Mount Elbrus (5,642 m) which, in the western Ciscaucasus in Russia, is generally considered the highest point in Europe.