This is a bit of a gray area, as an atmosphere doesn't have a clear boundary. That being said, Olympus Mons on Mars is so tall, the atmospheric pressure on top of it is only 12% the average pressure on the surface of Mars. That's near vacuum by terrestrial standards.
https://en.wikipedia.org/wiki/Olympus_Mons#Description
In general, for this to happen you need:
- a pretty thin atmosphere to begin with
- some exceptional geology that ends up producing very tall anomalies like Olympus
It's not a very likely combination, but it can happen, as seen on Mars.
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