It all started when a song was found in the tunnel, which was as little composed by nature as by man. The song was studied for years without success. Gradually, it got less attention, only a few flimsy theories were made about it. All the notes on the verses of the song remained riddles. The material of which it was composed was also partially obscured. It was some kind of metal anyway.
Later the lyrics were found and they were relatively interesting too. However, they were not helpful in interpreting the song either.
The first verse:
"I lay my head in the lap of darkness.
It is like an old mother who takes care of her exhausted child
so that the knocked knob and possessed mind can rest for a while."
