From the journal of Adrik Forgehammer:
Despite my gut feeling, we did survive the sphinx and his bone minions. After the dust had settled, we took a short rest. Miz’ri had contracted a bad case of Mummy Rot, so while the rest were poking about the chambers, I sat down and tried to help. I remember hearing that having a compound diluted to extremes leaves their healing essences in the water, so I applied a solution of diluted bat guano to MIz’ri. I think it did the trick, and cured her. I will have to research more into this.
The room itself actually had the answers to the riddle engraved on it. Not only was the sphinx undead, it was also not very creative. Regardless, we did see that the glyphs dated back to the Mezachin dynasty of the Kizark empire. This empire, we determined, was ruled by a brown dragon named Hectopichoche. I mentioned that this might be the same dracolich we fought before, but everyone else apparently came to that conclusion earlier and shrugged.
One of the pictographs had a coin, which was actually a medallion used to open a door at the end of a subterranian waterfall. Behind that is a monolith that I think belonged to the god Turog. It’s used to detect things under the rock. Could this be useful to us? We’ll have to investigate later, because we decided to head to Malbrezier first. Despite Miz’ri being cured, we were too tired to go on further. We scouted out the rest of the pyramid and killed a few more troglodytes, then Thango began a training regimen on the wyrvens. It went better than expected, and now we’re flying our way there. Flight, underground! I love it.