Vrelo Cave is located in the Canyon of Matka on the right bank of Treska River near the Macedonian capital of Skopje. Vrelo is a system of two caves, one above and one underneath the water, and a lake. Highlight of the top cave is a three meter high stalagmite, called the „Pine Cone”. The actual depth of the submerged cave has not yet been determined, it seems to lie well over 500 m, and therefore some consider Vrelo Cave to be Europe’s deepest underwater cave.
The cave consists spring and crystal-clear water brook, trimmed paths and numerous stone cave ornaments.