{
  "feature": "minecraft:lake_lava",
  "placement": [
    {
      "type": "minecraft:rarity_filter",
      "chance": 9
    },
    {
      "type": "minecraft:in_square"
    },
    {
      "type": "minecraft:height_range",
      "height": {
        "type": "minecraft:uniform",
        "max_inclusive": {
          "below_top": 0
        },
        "min_inclusive": {
          "absolute": 0
        }
      }
    },
    {
      "type": "minecraft:environment_scan",
      "direction_of_search": "down",
      "max_steps": 32,
      "target_condition": {
        "type": "minecraft:all_of",
        "predicates": [
          {
            "type": "minecraft:not",
            "predicate": {
              "type": "minecraft:matching_blocks",
              "blocks": "minecraft:air"
            }
          },
          {
            "type": "minecraft:inside_world_bounds",
            "offset": [
              0,
              -5,
              0
            ]
          }
        ]
      }
    },
    {
      "type": "minecraft:surface_relative_threshold_filter",
      "heightmap": "OCEAN_FLOOR_WG",
      "max_inclusive": -5
    },
    {
      "type": "minecraft:biome"
    }
  ]
}