Dozy won't wake up

"Dozy can't talk to you right now. he is in a very deep sleep. Maybe you should try to wake him up."
Nudge 1Where to look
Something loud. Very loud.
Nudge 2A stronger push
It's deep underground, under Silver Stream, in water.
Show the solutionThe whole answer, with a video
Bring the pair of brass cymbals from the mines' flooded chamber (Under Silver Stream) into Dozy's hut (away from the door) and drop them. "'yawwwn!!' says Dozy as the clash of the cymbals wake him. Dozy offers you his old thick rug." Take the thick Persian rug: it's for Zaks' castle.