For those of you who played the Elder Scrolls IV: Oblivion or more specifically, The Shivering Isles Expansion, you will know that there is a unique justice system in it. In which, if you choose to be detained instead of paying the fine, there is an option to try and escape with your life and if you do, your crimes are considered forgiven.
Well I decided this is a unique idea and am going to make a post about it.
A large vertical cave has a constant, strong wind blowing out of it from the bowels of the earth. If one was to jump into the currents they would have a controlled ascent on the winds till they reached a height where their weight and the winds force reached equilibrium. Impossible to climb down naturally. What is it? Natural winds from the earth or a complex magical protection for an underground lair?