{
  "format_version": "1.16.100",
  "minecraft:feature_rules": {
    "description": {
      "identifier": "minecraft:nether_cave_carver_feature",
      "places_feature": "minecraft:nether_hell_cave_carver_feature"
    },
    "conditions": {
      "placement_pass": "pregeneration_pass",
      "minecraft:biome_filter": [
        {
          "any_of": [
            {
              "test": "has_biome_tag",
              "operator": "==",
              "value": "hell"
            },
            {
              "test": "has_biome_tag",
              "operator": "==",
              "value": "nether"
            }
          ]
        }
      ]
    }
  }
}