Find a Minecraft base with just an image and world seed
You can find people's bases by comparing the natural terrain in an image with the seed of the world using a program.
It would be more difficult with this specific image because it looks like they've modified natural terrain a lot with terraforming. You need to be sure that the blocks you're incorporating into your calculations are most definitely natural and not modified by players.
https://github.com/coolmann24/TerrainFinderCpp
Here's the program that you'll need. Be advised, this could be considered cheating and you could get banned if you use this program. Check with your server admins first.