The Postojnska Cave in Slovenia is the second largest flowstone cave right after the Jeita cave in Lebanon. Since its opening around 200 years ago almost 30 million people walked through the delicate web of caves. But before the exploitation people would tell each other stories of dragons, who supposed to live in the cave. Saso Weldt, biologist, works in the Postojnska Cave. He takes care of olms, who were believed to be baby dragons and reveals old folk tales.