Ras casts Wind Walk with his 6th level slot.
The hours pass as quickly as the peaks below, until at last they come to one mountain that towers above the rest. Reòthadh surely recognizes the location as the entrance to Dorn's Deep, and guides the party towards the mouth of a large cave leading into the bowels of the mountain.
As the group draws closer, Ug feels the surfacing of memories that - to him - are of not so long ago. They are underlined by feelings of trepidation, however, for Ug did not leave the dwarven stronghold under the best of conditions. Not to mention the fact that his mother is supposedly being held captive here. And beyond it all, he has this strange feeling that while he was gone something must have gone terribly wrong in this place he once called home.
As the companions land in front of the cave mouth and retake their normal forms, they can't help but think about Belhifet and his schemes. The Heartstone Gem has led them here, and so here it must be that Poquelin - the archfiend Belhifet - has set up to be his base of operations. Whatever the dwarven citadel once was, what will it have become now?