I don't know if this is supposed to happen but this Village in the mountains spawned completely underground but it looks kinda cool.
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Please provide the seed and coordinates.
Here's the seed for another partial example: 1316773048766186309
The village at -1448, , 40 has one large house structure completely underground in a cave beneath several of the other structures.
Created in 1.20.60 on iPadOS

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@Jerry Doherty
This is a Java issue, not a Bedrock issue
My guess is it is a minor world gen thing specific to that world, I haven't seen too much similar but that being said I almost wish it was more common, it looks very interesting