{
    "type": "minecraft:decorated",
    "config": {
      "decorator": {
        "type": "minecraft:count_extra",
        "config": {
          "count": 128,
          "extra_count": 275000,
          "extra_chance": 1
        }
      },
      "feature": {
        "type": "minecraft:decorated",
        "config": {
          "decorator": {
            "type": "minecraft:square",
            "config": {}
          },
          "feature": {
            "type": "minecraft:decorated",
            "config": {
              "decorator": {
                "type": "minecraft:range",
                "config": {
                  "maximum": 245,
                  "bottom_offset": 128,
                  "top_offset": 0
                }
              },
              "feature": {
                "type": "minecraft:simple_block",
                "config": {
                  "to_place": {
                    "Name": "minecraft:basalt",
                    "Properties":{
                      "axis": "y"
                    }
                  },
                  "place_on": [
                    {
                      "Name": "minecraft:air"
                    }
                  ],
                  "place_in": [
                    {
                      "Name": "minecraft:netherrack"
                    }
                  ],
                  "place_under": [
                    {
                      "Name": "minecraft:netherrack"
                    }
                  ]
                }
              }
            }
          }
        }
      }
    }
  }