Risen/World (Chapter 4)

For one of the pieces of the Titan armor you need to enter a cave behind a waterfall. (Patty can take you there in "A trip to the waterfall with Patty") In the room with the map column, read it to obtain the regional map that will make it easier to navigate the cave. There is a wall in this room that can be broken with your pickaxe. Behind it is a switch. Every time you press the switch, one of the three doors in the main room will open. The switch will cycle through the doors. In the room to the south, you will be able to see the drawbridge and the winch that operates that. This is a no-magic zone, so you can't use telekinesis or levitate to get to the winch. Instead, you have to fire an arrow at the winch which will cause the drawbridge to be lowered.