{
  "format_version": "1.21.110",
  "minecraft:biome": {
    "description": {
      "identifier": "minecraft:deep_dark"
    },
    "components": {
      "minecraft:climate": {
        "temperature": 0.8,
        "downfall": 0.4
      },
      "minecraft:overworld_height": {
        "noise_type": "default"
      },
      "minecraft:surface_builder": {
        "builder": {
          "type": "minecraft:overworld",
          "sea_floor_depth": 7,
          "sea_floor_material": "minecraft:gravel",
          "foundation_material": "minecraft:stone",
          "mid_material": "minecraft:dirt",
          "top_material": "minecraft:grass_block",
          "sea_material": "minecraft:water"
        }
      },

      "minecraft:tags": {
        "tags": [
          "caves",
          "deep_dark",
          "overworld",
          "spawns_cold_variant_farm_animals",
          "spawns_cold_variant_frogs"
        ]
      }
    }
  }
}
