Enter the first tunnel.
From Wikiventure
You decide to go down the first tunnel. It is dark, and water is dripping from the ceiling. In the distance you can hear a distant rushing sound. You don't know what it is, so it doesn't bother you. At the end of this tunnel you can see a bit of a light. All of the sudden, water comes rushing out of nowhere, sweeping towards you.
.. What do you do?