{
  "feature": "clifftree:disk_snowy_podzol",
  "placement": [
    {
      "type": "minecraft:count",
      "count": 40
    },
    {
      "type": "minecraft:in_square"
    },
    {
      "type": "minecraft:heightmap",
      "heightmap": "WORLD_SURFACE_WG"
    },
    {
      "type": "minecraft:block_predicate_filter",
      "predicate": {
        "type": "minecraft:matching_blocks",
        "offset": [
            0,
            1,
            0
        ],
        "blocks": "minecraft:air"
      }
    },
    {
      "type": "minecraft:biome"
    }
  ]
}