It's now completely pitch black. The only sound is the every-increasing torrent of running water beneath your feet. Just then your hand hits apon something unexpected in the cave wall. Something smooth and round is sticking out of the wall! Then suddenly your realise - it's a door knob! "A door knob?! Here?!" Yet feeling further around, you confirm the presence of a small wooden door! The top of the door is about an inch below your now crouched head. It'll be a tight squeeze to fit through - if you even can.
If you want to open the door and try to squeeze through, click here.
If you'd rather keep searching down the passage, click here.
If you want to head back up to the entrance, click here.