{
  "structures": [
    {
      "structure": "maisonnette:catacombs",
      "weight": 1
    }
  ],
  "placement": {
    "type": "minecraft:random_spread",
    "spacing": 30,
    "separation": 10,
    "spread_type": "linear",
    "salt": 69395092,
    "frequency_reduction_method": "default",
    "frequency": 0.5
  }
}