Creating a new world in 21w14a resulted in messed up world generation, especially any mountain biome, it more looks like amplified version: there is a lot of arch-looking mountain, lots of weird tunnels and even flying islands. In other bioms ravines are so often that you need to always watch your steps to not fall in to one, i even saw a ravine parallel to another in distance of around 40 blocks, in which was another super-deep ravine. Also i cant find any enterance to cave system from the surface.