Known by tourists as the
Eyes of God, the Prohodna cave is a typical
karst cave in the north of Bulgaria and lies within one of the largest karst regions of the country. It is 262 meters long and easily accessible due to its two entrances on both sides of the cave. Prohodna cave is naturally lit because of these huge entrances and various holes in the ceiling.
Two of these holes are situated next to each other and their almond-like symmetrical shape gave them the striking resemblance to giant eyes. Seen from a certain angle they resemble a face looking down and during the rain it even seems as if the eyes were crying.
Not only is the cave a popular site for tourists and movie makers, it is also a good location for
speleology (the scientific ...