I don't know why!it's forbidden to make pictures inside. As a matter of fact, pictures would be technically very difficult, with the dimmed light, the large distance to the subjects, and the wide area to cover. Maybe they don't want successive flashing to interfere with the planned illumination.Pictures are free in the dolina, with the sunlight, but that has nothing to do with what we saw inside. In Postojna everybody violate the restrictions, here, no one even tried. Effects of the vertiginous sights?