Fire Escape

You are in an old prison complex to experience for yourself what it was like to be locked up in the past. The guide of your excursion is called away and closes the door for a while so you won't wander around this underground tunnel system. Suddenly, the evacuation alarm goes off, propane gas escapes from a rusted pipe. You have one hour to escape, after that the gas will ignite. (yes, there is really a fire) During this escape, you will be provided with protective clothing and boots.