{
    "feature": {
        "type": "minecraft:netherrack_replace_blobs",
        "config": {
            "radius": {
                "type": "minecraft:uniform",
                "min_inclusive": 5,
                "max_inclusive": 12
            },
            "state": {
                "Name": "minecraft:andesite",
                "Properties": {
                    "axis": "y"
                }
            },
            "target": {
                "Name": "minecraft:stone"
            }
        }
    },
    "placement": [
        {
            "type": "minecraft:count",
            "count": {
                "type": "minecraft:weighted_list",
                "distribution": [
                    {
                        "data": 180,
                        "weight": 100
                    }
                ]
            }
        },
        {
            "type": "minecraft:in_square"
        },
        {
            "type": "minecraft:height_range",
            "height": {
                "type": "minecraft:uniform",
                "min_inclusive": {
                    "above_bottom": 64
                },
                "max_inclusive": {
                    "absolute": 256
                }
            }
        },
        {
            "type": "minecraft:biome"
        }
    ]
}