This is the largest karst cave of Europe with a length of more than 20 km that has numerous tunnels and halls, and enough space to travel by train inside it.
This is the largest karst cave of Europe with a length of more than 20 km that has numerous tunnels and halls, and enough space to travel by train inside it.
user
Це найбільша карстова печера Європи протяжністю понад 20 км, де є численні тунелі і зали, а всередині неї можна пересуватися на поїзді.
assistant