Ask a geographer where Europe ends and Asia begins, and the Caucasus is one of the few places on Earth where the answer is genuinely disputed. This narrow strip of land between the Black Sea and the Caspian Sea packs three countries, a major mountain range, and several of the world’s longest-running territorial disputes into an area smaller than most single European nations.
The mountains that give the region its name
The Caucasus Mountains run roughly 1,100 kilometres between the Black Sea and the Caspian Sea, forming the physical spine of the region. Mount Elbrus, on the Russian side of the range, rises to 5,642 metres, making it the highest peak in Europe by the definition most atlases use, taller than Mont Blanc by a significant margin.
The range splits into two: the Greater Caucasus to the north, which forms the traditional continental boundary in many classifications, and the Lesser Caucasus to the south, lower and more fragmented, running through Georgia, Armenia and Azerbaijan.
Three countries, three very different profiles
- Georgia sits on the Black Sea coast, with the capital Tbilisi in the country’s east. Its territory ranges from subtropical coastline around Batumi to high alpine terrain in the Greater Caucasus along the Russian border.
- Armenia is landlocked and mountainous, entirely within the Lesser Caucasus, with no direct access to either the Black Sea or the Caspian. Its capital, Yerevan, sits in the shadow of Mount Ararat, a peak that lies just across the closed border in Turkey.
- Azerbaijan stretches along the Caspian Sea, with the capital Baku built around a natural harbour on the coast. Its territory includes the exclave of Nakhchivan, separated from the rest of the country by Armenian territory.
The border disputes that shape the map
Few regions this size carry as many unresolved territorial questions.
- Nagorno-Karabakh, an enclave historically populated by ethnic Armenians inside Azerbaijan’s internationally recognised borders, was the site of a long conflict between Armenia and Azerbaijan. Azerbaijan retook full control of the territory in 2023, and the map has been redrawn accordingly, though the underlying dispute over the region’s status is far from settled in the eyes of the populations involved.
- Abkhazia and South Ossetia, two breakaway regions within Georgia’s internationally recognised borders, declared independence with Russian backing after conflicts in the early 1990s and again in 2008. Most of the world’s countries still map them as part of Georgia; a small number of states recognise them as independent.
- Nakhchivan, Azerbaijan’s exclave, is reachable from the rest of the country only through Iran, Armenia or a narrow corridor whose status has been part of the broader post-2023 settlement discussions between Armenia and Azerbaijan.
Where Europe stops, depending who you ask
The most common convention places the Europe-Asia boundary along the crest of the Greater Caucasus, which would put most of Georgia, Armenia and Azerbaijan in Asia while placing the northern slopes, inside Russia, in Europe. Other conventions draw the line further north or south, and international bodies are not consistent with each other: some sporting and political organisations classify all three Caucasus states as European, reflecting cultural and diplomatic ties rather than strict physical geography.
This is the same kind of boundary ambiguity that runs through the wider region covered on this site’s Middle East map and Central Asia map, both of which border the Caucasus and share some of the same historical crossroads character.
A crossroads between empires
The map of the Caucasus has been redrawn repeatedly by the empires that bordered it: Persian, Ottoman and Russian control all left lasting marks on language, religion and architecture across the three countries. Georgia and Armenia both trace Christian roots back to among the earliest state adoptions of the religion anywhere in the world, in the early 4th century, while Azerbaijan developed a majority Muslim population under later Persian and Ottoman influence.
This layered history is visible on the ground rather than just on paper: monasteries carved into cliffs in Georgia, medieval churches in remote Armenian valleys, and Baku’s old walled city sitting beside a skyline of oil-boom towers.
What the map does not settle
The Caucasus remains one of the clearest examples on this site’s map series of a region where the political map and the physical map disagree, and where the map itself keeps changing. Nagorno-Karabakh’s status shifted within the past few years; Abkhazia and South Ossetia are mapped differently depending on the source. Anyone reading a map of the Caucasus should treat the borders as a snapshot of an ongoing situation, not a settled fact.
