Quote from glen on May 1, 2022, 8:53 pm

You have traveled 50 yards underground. Just ten yards ahead the tunnel is completely sealed off. You are trapped! Now how about that!

No, wait a minute! There's a wide, low door made of logs reinforced by strips of metal. Instead of a door handle, there are three levers in a row, each having three positions (top, middle, and bottom).

 

It seems to be some sort of combination lock...

Guess the combination (it's not the current setting)!