It is a fascinating cave that is perfect for lovers of photography, but also for those who want to witness firsthand, so-called God's eyes. The region where the cave has been subjected for millennia karst action, that is, the chemical erosion by water in certain types of soluble rocks that have shaped the landscape and tunnels and natural caves that produce a landscape excavated characteristic while we We found many other caves, in this article we will look at Prohodna Cave, which has a length of 272 meters and is the largest in Bulgaria.

The cave has two doorways that are opposite each other, known respectively as the small entrance and the large entrance.  The caves of the Geological Park of Iskar-disbelieve, are one of the most extensive karstic regions of the country. It is believed to have emerged in the Quaternary, and it is a paradise for lovers of caving, as is home to hundreds of caves also known as Oknata, the mysterious cave is unique because it contains a fascinating feature on the roof your camera Intermediate.  The cave contains large cavities, one next to the other with two huge almond-molded openings at the top, giving the viewer from below an appearance almost like Cave were looking down through a pair of indelible eyes. According to the experts, the "Eyes of God" were formed through erosion and let the light enter the cave.

While the cave is a popular tourist destination today, experts have found traces of prehistoric activity in the cave, which attests that humans lived in the cave during Neolithic and Chalcolithic.

The most fascinating moment to visit the cave is at night, when the sky is clear and the moon is full. So with a little patience and luck, you can see the moon through the two cavities on the ceiling of the cave.  When rainwater enters the two holes and falls through the walls of the cave; The locals often say that the eyes of God are crying.