The air is thin, the gravity is a bit less than 1g. The location: a stone bridge over a dry creekbed.

Oh huh, what's going on with the air? Maybe it's a mountaintop or something? Crow is Categorically Not A Thing That Suffocates anyway, it's fine - okay stone bridge means there's people of some kind somewhere, let's find them.

Crow takes off flying, looking for anything interesting.

It's not a mountaintop. It looks like a pretty low-lying area, insofar as one can tell without immediate visual access to the sea level comparison. The bridge connects a road that leads to a village, downstream (when there's a stream) where the creek switches back, in the one direction, to a slightly larger town. There are farms, not doing so hot. There are buildings. Pastures. Windmills. Barns. People, though fewer people than it looks like might be usual.

Aaaaare we being remotely responsible about what passes for a Masquerade today... no we are not, this is an adventure.

Also huh. Maybe wherever this is is just like this? 

Crow flies down to land in the village near some of the people. 

Some scream and scatter! An eight year old boy gawks at her! An old lady takes off her glasses to clean them on her scarf! It seems descending winged humanoids are not an everyday occurrence.

Yeah she was not particularly expecting them to be, they aren't at home either. She lands and Does Not do anything more purposely threatening than exist. 

"Hello. Where is this?"

(One of her necklaces, a glass eye the same color as her own, does translation. Or rather - she Understands and Is Understood.)

"Rechher," says the old lady, putting her glasses back on and then removing them again when she finds the result unsatisfactory.

"Is that the name of the village or the country or the world? - I don't think this is my any of those, the air's thinner than it should be this not being a mountain."

"The village," says the old woman suspiciously. "The air's been doing that. If you weren't paying attention for the last couple of months it might come as a shock."

"I'm fairly sure I'm from really deeply somewhere else and the air at home is not in fact doing that."

"...why is the air doing that?"

"World's ending."

Crow blinks. Adventure indeed! 

"Ookay. Why is the world ending and is anybody doing anything about it?"

"Nothing to do, I don't think. Mages did some dumb-as-sheep mage thing."

"Mages?"

This is not someone's successful Ritual, the world would be ended, not ending - and also there is nobody Crow knows who would call avatars mages.

"The dumb-as-sheep ones, yes."

"What did they do? And do you know where I could find one to talk to?"

"They did too much magic, of course. If they've got even as much sense as a sheep they're hiding!"

"What do you mean by too much magic. Why does this make the world be ending. I am not from here, my magic clearly does not work at all like yours, 'too much magic' is way less explanation than you want it to be."

"The world is getting disappeared because that's what magic does, whatever fancy targeting you do there's only less and less until there's nothing left to live on."

"Wow. Congratulations, your magic might be less natively helpful than mine and mine Feeds on fear!"

"...this is sounding like I should definitely find a mage to talk to. You don't know where any are, it sounded like? If you do but they're far away, tell me anyway, distance is not a thing I care much about."

"They usually live in cities. Like Gatesnest, if that's a city. But if they have any sense they're hiding from a lot of people who might like them to live a little less long than the world."

"Which direction from here is Gatesnest, can you point?"

"I think there's like three of it in various directions."

"Well, can you point to any of them?"

She points vaguely east-southeast.