Villages may have variants, spawning in different biomes. There is not a village type specifically for mountains, but sometimes, generation is slightly weird in Minecraft. In this seed, a plains village spawns right next to a mountain, with some of the houses and village parts on the mountain!

A big mountain spawns a few houses on a mountain.

The coordinates are 108, 63, 477. Please note that the four-sided grass path and grass is part of a texture pack, not specific to this seed.

An animal pen on top of a snowy platform, a bit higher than the first image:

Here is the village from the top:

There is also a sunflower plains nearby

Please Note: This is NOT beta. I do not know if it works on beta.

creator: https://twitter.com/crompz

Seed ID

1574591034