I was rereading in prepration of running module and couldn't puzzle out how the PCs re-enter the Agronach and reach area 11 to confront Helrun. Pages 24-25 note 2 entrances on the back of the beast, which I suspect are the two sets of stairs between 6 and 11, that can be accessed by flying or climbing or leaping down from Glimmerhold when the thing is climbing up. Once inside however there doesn't appear to be any internal access into 11. Are the PCs expected to hack their way in? Teleportation is out due to the dim lock. Not having a viable route after scaling/flying/falling and possibly suffering the two 4d12+20 attacks doesn't seem quite right, is it some sort of oversight?