Hopo Better Mineshafts Data Pack 1.20+

Hoppo Better Mineshafts is a structures datapack that will revamp Mineshafts; there will be new variants of the mine shafts that are biome-dependent; they are way more extensive and quite vast; you can also come across a number of loot chests. I’ve played many mods that do the same thing, but Hopo’s datapack here seems to be the best I’ve come across.