MCMinecraft Assets Explorer

{
  "feature": "minecraft:spring_lava_frozen",
  "placement": [
    {
      "type": "minecraft:count",
      "count": 20
    },
    {
      "type": "minecraft:in_square"
    },
    {
      "type": "minecraft:height_range",
      "height": {
        "type": "minecraft:very_biased_to_bottom",
        "inner": 8,
        "max_inclusive": {
          "below_top": 8
        },
        "min_inclusive": {
          "above_bottom": 0
        }
      }
    },
    {
      "type": "minecraft:biome"
    }
  ]
}