{
    "type": "minecraft:jigsaw",
    "biomes": "#zhopo:has_structure/dark_oak_mineshaft",
    "step": "surface_structures",
    "spawn_overrides": {},
    "start_pool": "hopo:dark_oak_mineshaft",
    "size": 3,  
    "start_height": {
    "type": "minecraft:uniform",
    "min_inclusive": {
      "absolute": -5
    },
    "max_inclusive": {
      "absolute": 7
    }
  },
  "max_distance_from_center": 118,
  "use_expansion_hack": false
}