Bulgaria: Prohodna

 

Prohodna is located in the north central part of Bulgaria in Iskar Gorge close to the village of Karlukovo. Prohodna is a Karst cave this means that it was formed through the dissolution of soluble rock. The cave is distant because of the two eye shaped holes in the top portion of the cave. The cave is 860 feet or 262 meters long making it the longest cave in Bulgaria. The cave has a small entrance and a big entrance. The two holes in the ceiling of the cave is a great place for bungee jumping adventurous but if you are not as thrill seeking the 2 entrances are the best ways to access the cave to see inside.