Prohodna Cave (The Eyes of God)
Prohodna cave is one of the most famous caves in Bulgaria. It's 2km. away from Karlukovo village. The cave is a natural rock bridge 262m. long. It has 2 entrances - a big one and a small one. The cave is naturally lit by the enormous entrances and the natural openings at the top - the so called "okna". It is these "okna" which make the cave unique. That's why it is also known as "The eyes of God", but sometimes it is called "The eyes of the Devil".
