{
  "placement": {
    "type": "minecraft:random_spread",
    "spread_type": "linear",
    "salt": 30184232,
    "spacing": 40,
    "separation": 18,
    "frequency": 1.00
  },
  "structures": [
    {
      "structure": "explorify:black_spiral",
      "weight": 1
    }
  ]
}