Maps now correctly show the colors of blocks below a Y level of zero.

New flat worlds using the Caves & Cliffs experimental toggle will generate starting at 'y=-64'.

Upgrades older flat worlds to the new extended heights available with the Caves & Cliffs experimental toggle.Flat worlds with the Caves & Cliffs experimental toggle enabled will properly upgrade to use the new dimension heights.Copper Ore now generates up to y=96 instead of y=64.The placement logic of Small Dripstone feature has been refactored so frequency is similar but exact positions will differ.Dripstone features now generate at Deepslate depths.Deepslate now generates at lower depths.Trees in swamps can now generate slightly deeper when in water.Tweaked mob spawning in mountain and cave biomes to match the Java Edition side-snapshot.Tweaked biome placement, river size, and terrain shapes for a better overworld experience.Tweaked ore distribution to match the Java Edition side-snapshot.Infested Stone can be found under new mountains.Mountain biomes now have correct feature places to match the Java Edition side-snapshot.Dripstone features now only generate in Dripstone biome.Dripstone Clusters can now only be found in the Dripstone biome.Corrected vegetation in Mountain Meadows.This is a variant of lofty / snow-capped peaks that uses stone and gravel instead of snow and ice, and is used to avoid temperature clashes such as a snow-capped peak sticking up from a jungle.Added a new mountain biome: Stony Peaks!.

Chunks previously upgraded with Bedrock underneath will not see this change.Added new world / cave generation when upgrading saved chunks below 'Y=0' using the Caves & Cliffs experimental toggle.

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