{
  "type": "minecraft:jigsaw",
  "biomes": "#zhopo:has_structure/portal",
  "step": "surface_structures",
  "spawn_overrides": {},
  "terrain_adaptation": "none", 
  "start_pool": "hopo:portal",
  "size": 4,  
  "start_height": {
    "absolute": -54
  },
  "max_distance_from_center": 117,
  "use_expansion_hack": false
}