Prohodna Cave – a favorite place for filming movies in Bulgaria

The cave is naturally lit by huge entrances and natural openings in the ceiling, which have gained world fame as the "Eyes of God" – two huge, almost identical in size holes in the shape of eyes, formed as a result of erosion.

Scenes for two of Bulgaria's largest historical film productions – "Prince Boris I" and "A Time of Separation" – were filmed here in the 1980s.

Back then, the cave was the setting for the famous children's adventure series "In the Footsteps of Captain Grant" by director Stanislav Govorukhin based on the novel by Jules Verne. The film is a co-production of Bulgaria and the USSR.

In more recent times, Prohodna has been visited by many Hollywood stars, including Ed Harris and Colin Farrell (The Way Back) and Christophe Lambert (Vercingetorix). The Bulgarian-French production "Ao, le dernier Neandertal" was also filmed here.