Larian Studios Forums Divinity 2 - Ego Draconis (English) Help/Tips/Tricks sentinel island - battle tower interior

hi,

the road to battle tower already blocked by susan's sister by stones. is there another way to enter the battle tower? i try to use another door on the mountain but the door can't be open up. is seems that the battle tower interior is the only way in. anyone help on this? thanks.

best regards,
isaac