{
  "type": "minecraft:spring_feature",
  "state": {
    "id": "minecraft:lava",
    "properties": {
      "falling": "true"
    }
  },
  "valid_blocks": [
    "minecraft:stone",
    "minecraft:granite",
    "minecraft:diorite",
    "minecraft:andesite",
    "minecraft:deepslate",
    "minecraft:tuff",
    "minecraft:calcite",
    "minecraft:dirt"
  ]
}