The answer is the Carribean
The CAUCASUS MOUNTAINS run from the Black Sea to the Caspian Sea.
The Caucasus Mountains is a mountain system in Eurasia between the Black and the Caspian sea in the Caucasus region. basically Eurasia.
Caucasus Mountains
Along the western and southern shores of the Caspian Sea, there are mountains (specifically the Caucasus, Alish, and Elburz Mountain Ranges going counterclockwise), but on the northern and eastern shores of the Caspian Sea, there are lowlands, some which are below sea-level.
The Caucasus Mountains is a mountain system in Eurasia between the Black and the Caspian sea in the Caucasus region. basically Eurasia.
Caucasus
Elburz Mountains (also spelled Alborz) are south of the Caspian Sea.
The Caspian Sea
The Volga River.
The Black Sea
Caspian Sea is in Asia; it is an error to consider this sea in Europe.
Elburz Mts.