I am looking for a biome, i think it was a base of Captain Sparkles in one of his playthroughs (modded), or maybe some other youtuber, definitely a youtube video. But this biome has a massive circular ravine (two layers, like, a floor than 50 blocks up a outer circular ring than 50 more blocks up the top? sorta imagine that.) there are waterfalls from the top of the ravine all around and at the floor there is a lake sort of that is being fed by the waterfalls. hope this rings a bell.