Larian Studios Forums Divinity 2 - Ego Draconis (English) Help/Tips/Tricks Orobas Fjords puzzling

I've been in the two caves I could get into, now can't seem to advance further. There are invisible walls for both dragon and human. Can someone suggest where or what I should try next?

There is a fort on the side of the cliffs which you enter and deactivate the shields.

Thanks