Unknown Footsteps Pythian Castle

This is video we captured in Pythian Castle in the basement tunnel, beneath the dungeon cells. We captured the sound of very loud footsteps in the tunnel from a camcorder we had mounted to a tripod. The tour guide informed us of an unknown spirit in the castle, whom they affectionately call "Mr. Boots," because of these ominous footsteps, that sound like someone wearing heavy work boots stomping around.