Actually Lyndon the bit you posted there is what you have to do AFTER you climb out of the window. What Gemma (and now me!) wants to know is how the heck you are supposed to get up to the window in the first place? Having clambered hand over hand across the rails to throw the switch, the wheel turns inside the cage (on ground level) and the post moves up and down like a piston. There is nowhere else for Ico to go to via the rails so he climbs down the ladder and has to drop off onto the (stone) floor below - he and Yorda are still in the same building at this point.
Ico's next task is to exit the room by way of the window above the cage with the (water?) wheel in it. If you go outside and back onto the bridge you can clearly see Ico's route and the ladder coming down from the open window.
I went online to see if I can find any tips regarding how to get to this window and they all said that Ico must stand on the piston-block and jump at the same time as the piston throws him up in the air. Apparently he is supposed to cling onto a ledge from where you can make your way up to the window. I have now spent just over two hours trying to do this and I cannot see how on earth this is meant to happen because apart from anything else, there is no ledge...at least not that I can see.
So.......any ideas? Have you played this game Lyn? Has anyone else here played it?
Pleeezzzzz....I really want to continue with this and it is sooo infuriating to get stuck!
Cheerz!
Edit: * * * * Okay so it's another few hours later and I've finally sussed it!! You have to time Ico's jump with the small piston inside the cage reaching its apex! Easier said than done though! When you get it right, he will be shot unfeasibly high into the air where he can grab onto a ledge about the width of a housebrick! From there you can haul Ico up to the window!
The other way I think you could do it would be to get Ico lined up exactly with the centre gap in the bars and repeatedly press the jump button whilst simultaneously pushing forward to ensure he doesn't fall off the piston-block - the law of averages dictates that if you do this often enough, sooner or later you will succeed!
This is by far the most tricky and frustrating part of the game!
Phew! Onto the next bit!