Fly in or you will be dead in a second.
Broken valley is sort of like a flying fortress but land based. You need to either take out as many towers as you can by air and then go human form over walled in or clear areas to drop the barriers.
On the left is the area to take down the first barriers I think, been a week or so since I played and I'm a old that can't remember past a week.
I'm on to playing ME2 now.
And don't forget to go back to the old mine area, the one they blew up when you could walk in the valley to free the mine guild master and get the key to the other mine entrance if you did not do that already. Where the heck those guys and gals go when going out the door I have no clue as it's all poison.
Oh and one of the generals in the valley in there hideout they have the key for the chest in that old mine building with the guild master. I got the key but forgot to go back and open the chest, probably junk like potions in there anyways.
Are you the one that was having the freezing in the battle tower after the demon runs away or was that someone else. Hard to tell in this forum as the watched topics option only works till you log out then their all gone.