{
    "type": "minecraft:overworld",
    "generator": {
        "type": "flat",
        "settings": {
            "biome": "plains",
            "lakes": false,
            "features": false,
            "layers": [
                {
                    "block": "bedrock",
                    "height": 1
                },
                {
                    "block": "deepslate",
                    "height": 63
                },
                {
                    "block": "stone",
                    "height": 95
                },
                {
                    "block": "gray_concrete",
                    "height": 5
                }
            ]
        }
    }
}