Large misshapen caverns that extend deep into the rocks around which the Weyr was formed. The humans of the Weyr have many rooms used, but they are large enough that dragons may also enter in places. Further down the twists and turns are still more places not currently in use.
A large hall whose acoustics are good enough that those who stand at the front of the meeting can be heard by all in the room. It’s large enough to hold every rider, and has high ceilings to create an impressive effect.