{
  "type": "minecraft:jigsaw",
  "start_pool": "hardrock:quarry/start_pool",
  "size": 2,
  "max_distance_from_center": 80,
  "spawn_overrides": {"creature": {"bounding_box": "piece","spawns": []}},
  "step": "surface_structures",  
  "terrain_adaptation": "beard_thin",
  "start_height": {"absolute": 2},
  "project_start_to_heightmap": "WORLD_SURFACE_WG",
  "biomes": "#minecraft:is_plains",
  "use_expansion_hack": false
}