{
  "feature": "minecraft:end_gateway_return",
  "placement": [
    {
      "type": "minecraft:rarity_filter",
      "chance": 80
    },
    {
      "type": "minecraft:in_square"
    },
    {
      "type": "minecraft:heightmap",
      "heightmap": "MOTION_BLOCKING"
    },
    {
      "type": "minecraft:random_offset",
      "xz_spread": 0,
      "y_spread": {
        "type": "minecraft:uniform",
        "max_inclusive": 9,
        "min_inclusive": 3
      }
    },
    {
      "type": "minecraft:biome"
    }
  ]
}