Weird Grass and Taiga Lake generation (seed: -7360672562458547898. coords: x -760, z 200, 1.21.11)

I have NEVER seen world gen like this, I have no clue if this is something thats been seen before but I have played A LOT of minecraft and have NEVER seen anything close to this. There is so many weird things about this, but the craziest part to me is that there is both a trial chamber AND an ancient city VERY close nearby. I have never done any seed finding nor do I even know how, this was all found by me searching for a trial chamber in a survival world.