CoFH World Examples - Feature Types - Spout (Sinkholes)

spout_example_sinkholes.json

{
  "populate": {
    "spout_example": {
      "distribution": "cave",
      "generator": {
        "type": "spout",
        "block": "minecraft:air",
        "radius": 3,
        "height": {
          "value-a": {
            "value-a": {
              "world-data": "SURFACE_BLOCK"
            },
            "value-b": {
              "world-data": "CURRENT_Y"
            },
            "operation": "SUBTRACT"
          },
          "value-b": 20,
          "operation": "ADD"
        },
        "material": [
          "minecraft:dirt",
          "minecraft:sand",
          "minecraft:stone",
          "minecraft:sandstone",
          "minecraft:gravel",
          "minecraft:grass",
          "minecraft:log",
          "minecraft:leaves"
        ]
      },
      "cluster-count": 1,
      "chunk-chance": 8
    }
  }
}