The Tatras.
Slovakia and Hungary
Danube, which flows through Slovakian cities of Bratislava, Komarno and Sturovo, is the river which is a border between Slovakia and Hungary, on some 200 km.
The Danube River forms the border of some countries. They are Romania, Bulgaria, Hungary, Serbia, Slovakia, Austria and Germany.
ghats!
ALBORZ
The mountain range that forms a border with Spain and France is the Pyrenees Mountains. The border that separates the two counties runs at the highest point of the Pyrenees' Mountain Range.
The rockies
Himalayas
Elburz Mountains
The Jura Mountains.
The Carpathian Mountains.
The Himalayan mountain range.