I remember having this problem last time I played, but don't remember the solution. At the top of the spire, when you jump off the bridge then swim down and through the waterfall and (try to) land on the middle bridge: can't get through the waterfall. I've tried the usual swiming tricks but nothing works. I seem to remember there is a way to get back to that middle bridge without jumping through the waterfall, but I can't remember that either. Suggestions welcome.
Thanks!!!

Oops! Guess I'll answer my own question. Sorry 'bout that folks!
Here's the trick I (finally) remembered: when you dive down into the water pit to get to the short tunnel to the waterfall, you pass a water(fall?) entrance just to one side but before getting to the short tunnel. If you can turn your party to that entrance you can easily get through it. That puts you where you can breathe again, in the short tunnel containing the chest with the 3rd dragon shard. The rocks blocking the tunnel are on the OTHER side of the chest! Get the shard, use the Sigil to melt the stones, go through the tunnel and back around to the high bridge and on to the encounter with Erathsemedor.
Of course you only need this if your characters, like mine, can't get through the waterfall. Or if you don't like jumping down to (and possibly missing) the middle bridge. Or if you just like shortcuts.
Hope this helps someone.

Those waterfall bridges are a bit fun. With luck, you can cut out part of the travel.

Glad you were able to get through [img]smile.gif[/img] You might want to spell this out a bit more and add it to the Best Tips thread. That way, other folks will be able to find it easily.