{
  "feature": {
    "type": "minecraft:random_patch",
    "config": {
      "tries": 128,
      "xz_spread": 2,
      "y_spread": 3,
      "feature": {
        "feature": {
          "type": "minecraft:block_column",
          "config": {
            "direction": "up",
            "allowed_placement": {
              "type": "minecraft:matching_blocks",
              "blocks": [
                "minecraft:water",
                "minecraft:air"
              ]
            },
            "prioritize_tip": true,
            "layers": [
              {
                "height": {
                  "type": "minecraft:biased_to_bottom",
                  "value": {
                    "min_inclusive": 4,
                    "max_inclusive": 8
                  }
                },
                "provider": {
                  "type": "minecraft:simple_state_provider",
                  "state": {
                    "Name": "minecraft:stone"
                  }
                }
              }
            ]
          }
        },
        "placement": [
          {
            "type": "minecraft:block_predicate_filter",
            "predicate": {
              "type": "minecraft:matching_blocks",
              "offset": [
                0,
                -1,
                0
              ],
              "blocks": "minecraft:stone"
            }
          }
        ]
      }
    }
  },
  "placement": [
    {
      "type": "minecraft:noise_based_count",
      "noise_to_count_ratio": 6,
      "noise_factor": 400,
      "noise_offset": 0
    },
    {
      "type": "minecraft:in_square"
    },
    {
      "type": "minecraft:heightmap",
      "heightmap": "OCEAN_FLOOR"
    },
    {
      "type": "minecraft:block_predicate_filter",
      "predicate": {
        "type": "minecraft:matching_fluids",
        "fluids": "minecraft:water"
      }
    },
    {
      "type": "minecraft:biome"
    }
  ]
}
