On the northwestern side of the castle hill is the entrance to a secret cave. In 2003 this amazing underground world revealed an interesting secret. The cavers and archaeologists came upon human bones, leather pouches, several coins and pottery shards dating back to the 1st and 2nd century A.D at the end of a narrow crack deep within the cave.
On the rocky plateau, where the Spiš Castle currently stands, once stood an extensive settlement belonging to people of the Púchov Culture. These people actively engaged in trade activities and maintained pure trade links with Rome. At some point towards the end of the second century, the owner of these coins, probably a respected trader, was overtaken in these lands by some unanticipated events and looked for a place to hide. He found it in the depths of a dark cave that was accessible from above. Maybe he crawled in intentionally or perhaps he was unlucky enough to fall inside, we will never know. We can be certain, however, that he never got out. He remained imprisoned in the cave and died of fatal injuries. He spent centuries guarding his property there. It was quite a fortune indeed. Some Roman silver coins have spilled out of his leather pouches, just like in a fairy tale. Thus the secrets of the cave are slowly but surely unveiling themselves, bearing testimony to the significance of this region even in the most ancient of times.