{
    "feature": {
        "type": "minecraft:block_column",
        "config": {
            "allowed_placement": {
                "type": "minecraft:matching_blocks",
                "blocks": [
                    "minecraft:air"
                ]
            },
            "direction": "down",
            "layers": [
                {
                    "height": {
                        "type": "minecraft:biased_to_bottom",
                        "min_inclusive": 1,
                        "max_inclusive": 5
                    },
                    "provider": {
                        "type": "minecraft:simple_state_provider",
                        "state": {
                            "Name": "minecraft:cobweb"
                        }
                    }
                }
            ],
            "prioritize_tip": false
        }
    },
    "placement": [
        {
            "type": "minecraft:count",
            "count": 256
        },
        {
            "type": "minecraft:in_square"
        },
        {
            "type": "minecraft:height_range",
            "height": {
                "type": "minecraft:uniform",
                "min_inclusive": {
                    "above_bottom": 11
                },
                "max_inclusive": {
                    "absolute": 192
                }
            }
        },
        {
            "type": "minecraft:environment_scan",
            "direction_of_search": "up",
            "max_steps": 32,
            "target_condition": {
                "type": "minecraft:has_sturdy_face",
                "direction": "down",
                "offset": [
                    0,
                    1,
                    0
                ]
            }
        },
        {
            "type": "minecraft:biome"
        }
    ]
}