Larian Studios Forums Divinity 2 - Ego Draconis (English) Help/Tips/Tricks *Spoiled* : where to go in Orobas Fjords

I get to Orobas Fjords by a teleport , fight to way to the wartefall , get inside the cave behind it.
But the first encounter I met there is at level 23 , so I thought I will go around and do some sidequest to lvl up.........and then I don't know where to go next

I can't find a single road in Orobas Fjords , so I flight along 2 rivers ,one of them lead to Broken valley , the other is blocked by a shield (even human can't pass) , which from there I can see a tower ( or the city on the cliff - i don't know) How can I remove the shield ???.