monoliths.json

{
  "variants": [
    {
      "stairSelector": {
        "entries": {
          "minecraft:polished_blackstone_brick_stairs[facing=north,half=bottom,shape=straight,waterlogged=false]": 0.5,
          "minecraft:blackstone_stairs[facing=north,half=bottom,shape=straight,waterlogged=false]": 0.5
        },
        "defaultBlock": "minecraft:blackstone_stairs[facing=north,half=bottom,shape=straight,waterlogged=false]"
      },
      "cornerSelector": {
        "entries": {},
        "defaultBlock": "minecraft:chiseled_polished_blackstone"
      },
      "insideSelector": {
        "entries": {
          "minecraft:cracked_polished_blackstone_bricks": 0.2
        },
        "defaultBlock": "minecraft:polished_blackstone_bricks"
      },
      "fenceSelector": {
        "entries": {
          "minecraft:polished_blackstone_wall[east=none,north=none,south=none,up=true,waterlogged=false,west=none]": 0.33,
          "minecraft:polished_blackstone_brick_wall[east=none,north=none,south=none,up=true,waterlogged=false,west=none]": 0.33,
          "minecraft:blackstone_wall[east=none,north=none,south=none,up=true,waterlogged=false,west=none]": 0.33
        },
        "defaultBlock": "minecraft:blackstone_wall[east=none,north=none,south=none,up=true,waterlogged=false,west=none]"
      },
      "powerBlock": "minecraft:gold_block",
      "decorationBlock": "minecraft:yellow_glazed_terracotta[facing=north]",
      "beamStopBlocks": [
        "minecraft:obsidian"
      ],
      "unpoweredBeamColor": {
        "red": "14",
        "green": "0c",
        "blue": "24",
        "alpha": "FF"
      },
      "poweredBeamColor": {
        "red": "FF",
        "green": "DC",
        "blue": "73",
        "alpha": "FF"
      },
      "minY": 35,
      "maxY": 70,
      "playerTeleportedMinY": 11,
      "playerTeleportedMaxY": 30,
      "spawnChance": 0.1,
      "spawnDimension": "minecraft:the_nether",
      "targetDimension": "minecraft:overworld"
    }
  ]
}