{
  "feature": "pneumaticcraft:oil_lake",
  "placement": [
    {
      "type": "minecraft:rarity_filter",
      "chance": 25
    },
    {
      "type": "minecraft:in_square"
    },
    {
      "type": "minecraft:heightmap",
      "heightmap": "WORLD_SURFACE_WG"
    },
    {
      "type": "minecraft:biome"
    },
    {
      "type": "pneumaticcraft:oil_lake_filter"
    }
  ]
}