Archaeologists are investigating the main tower of the Karavski Castle - the Princess Tower, or Keystone.
The local walls heard the keystot cables, Vitov prayers, the calls of his wife Anna. Almost six centuries of oblivion - no one knew where the threshold of the dark dungeon was, which had become a scene of unpunished crime. Archaeologists are following the work of people and equipment: they have not yet dug to the height of the dungeon itself.