Sorry, I didn't express myself clearly. I do know how to transform into a dragon. I just haven't been able to do so while on Sentinel Island, since I haven't found a suitable place outside the tower to make the transformation (the spaces among the cliffs have all been to cramped). But I am beginning to suspect that I just haven't been looking closely enough.

And I don't think it is possible to fly overseas to the island, directly from the fjords....?

/Procrastes