The vertical shaft was about four meters deep.
Below the chiseled cement floor lay the rough earth layer.
The vertical shaft only allowed one person to climb up and down, and at its narrowest point, just one person could pass through. Once at the bottom, the area widened slightly, presumably for construction convenience.
The horizontal shaft had a greater volume of earth removed, sloping down more than two meters. The main part of the basement was two meters high, covering an area of about ten square meters. It even had a ventilation system retrofitted from a chimney. Although the air was still foul, it was capable of supporting long-term survival.
What was even more surprising was that there was a computer in the dungeon. It couldn't connect to the internet, but it appeared to be used for entertainment.
