Explore explore!

They find a ruined mansion! There's a gorgeous mosaic in one room displaying two labeled cities and some hills. It's rather abstract and not a good map, but Tem identifies one of the labels as "Mechuria City" ("it's the capital, and it's where we are now") and the one up-river from it as "Tisfaat".

"Oh, I went to that one when I was looking for people and flowers."

"Nice! What did you find there? Were there still traces of city left?"

"Traces, yes."

"Great! Depending on how long it takes us to do a thorough search of this city, we might make it up there before we go back to Pinehedge."

"If you tell me more about what you're looking for and we make sure I can find you again I could go and get stuff out of it and bring it back."

"The main thing we're looking for is magical artifacts, which I'm not sure you can identify readily, but really any man-made objects are probably interesting enough that we want them. How long will it take you to get there and back?"

"Not that long if I'm trying to go fast and not look at stuff in between."

"I expect we'll spend at least a few more days here, and I doubt there's much left to find in the countryside, so that sounds like a good idea."

"It won't take me days. I'll go loot the place."

"Awesome! Let me give you a pen and paper first so you can take notes on where you found things, location is important for this sort of thing." He digs a pen and some paper out of his pack.

"Sure. Why is it important?"

"Well, consider these pliers we found. We found an earring and a coil of silver wire in the same building, and between those and the amount of glass-dust in here that suggests that this might have been a jewelry shop. Hypotheses like that."

"Okay. I'll draw a little map."

"Awesome!"

And she gets up in the air and flies real fast.

Wow she's fast. 

There's not much in the air with her today, and still less capable of keeping up with her. She's unbothered until the evening, when she sees the river widen temporarily into a lake with an island in the center.

She flies a bit low over that island to see if there's anything cool on it.

That's where the ruins of Tisfaat should be, and indeed there are some!

She circles it, memorizes the layout, lands, sketches the map, and starts hunting.

As she gets lower, she sees something weird underwater near the east end of the island.

Hmm, okay, swimming mode, she sets her map under a bit of rubble and has a look.

It appears to be a spherical region underwater in which there isn't any water, or anything else visible.