[
  {
    "type": "overmap_special",
    "id": "iso_msl",
    "subtype": "mutable",
    "locations": [ "iso_nether" ],
    "city_distance": [ 0, -1 ],
    "city_sizes": [ 0, -1 ],
    "occurrences": [ 4, 4 ],
    "flags": [ "ISO_MAP" ],
    "check_for_locations": [
      [ [ 0, 0, 0 ], [ "iso_nether" ] ],
      [ [ 0, 0, -1 ], [ "iso_nether" ] ],
      [ [ 4, 0, -1 ], [ "iso_nether" ] ],
      [ [ 3, 0, -1 ], [ "iso_nether" ] ],
      [ [ 2, 0, -1 ], [ "iso_nether" ] ],
      [ [ 1, 0, -1 ], [ "iso_nether" ] ],
      [ [ -4, 0, -1 ], [ "iso_nether" ] ],
      [ [ -3, 0, -1 ], [ "iso_nether" ] ],
      [ [ -2, 0, -1 ], [ "iso_nether" ] ],
      [ [ -1, 0, -1 ], [ "iso_nether" ] ],
      [ [ 0, -4, -1 ], [ "iso_nether" ] ],
      [ [ 0, -3, -1 ], [ "iso_nether" ] ],
      [ [ 0, -2, -1 ], [ "iso_nether" ] ],
      [ [ 0, -1, -1 ], [ "iso_nether" ] ],
      [ [ 0, 4, -1 ], [ "iso_nether" ] ],
      [ [ 0, 3, -1 ], [ "iso_nether" ] ],
      [ [ 0, 2, -1 ], [ "iso_nether" ] ],
      [ [ 0, 1, -1 ], [ "iso_nether" ] ]
    ],
    "joins": [
      "hallway_to_hallway",
      "duct_to_surface",
      { "id": "hallway_to_microlab", "opposite": "microlab_to_hallway" },
      { "id": "microlab_to_hallway", "opposite": "hallway_to_microlab" },
      "microlab_to_microlab"
    ],
    "overmaps": {
      "surface": { "overmap": "nether_glass_impassable_north", "below": "duct_to_surface", "locations": [ "iso_nether" ] },
      "iso_elevator": { "overmap": "iso_elevator_north", "above": "duct_to_surface", "north": "hallway_to_hallway" },
      "iso_next_level_elevator": { "overmap": "iso_next_level_elevator_north", "north": { "id": "hallway_to_hallway" } },
      "special_rock": { "overmap": "special_rock" },
      "nether_glass_impassable": { "overmap": "nether_glass_impassable_north" },
      "microlab": {
        "overmap": "microlab_generic",
        "north": { "id": "microlab_to_microlab", "alternatives": [ "microlab_to_hallway" ] },
        "east": { "id": "microlab_to_microlab", "alternatives": [ "microlab_to_hallway" ] },
        "south": { "id": "microlab_to_microlab", "alternatives": [ "microlab_to_hallway" ] },
        "west": { "id": "microlab_to_microlab", "alternatives": [ "microlab_to_hallway" ] }
      },
      "microlab_edge": {
        "overmap": "microlab_generic_edge",
        "north": { "id": "microlab_to_microlab", "type": "available", "alternatives": [ "microlab_to_hallway" ] },
        "east": { "id": "microlab_to_microlab", "type": "available", "alternatives": [ "microlab_to_hallway" ] },
        "south": { "id": "microlab_to_microlab", "type": "available", "alternatives": [ "microlab_to_hallway" ] },
        "west": { "id": "microlab_to_microlab", "type": "available", "alternatives": [ "microlab_to_hallway" ] }
      },
      "firebreak": { "overmap": "microlab_generic_firebreak_north", "north": "hallway_to_hallway", "south": "hallway_to_hallway" },
      "hallway_cross": {
        "overmap": "microlab_generic_hallway_nesw",
        "north": "hallway_to_hallway",
        "east": "hallway_to_hallway",
        "south": "hallway_to_hallway",
        "west": "hallway_to_hallway"
      },
      "hallway_straight": {
        "overmap": "microlab_generic_hallway_ns",
        "north": "hallway_to_hallway",
        "east": "hallway_to_microlab",
        "south": "hallway_to_hallway",
        "west": "hallway_to_microlab"
      },
      "hallway_curve": {
        "overmap": "microlab_generic_hallway_ne",
        "north": "hallway_to_hallway",
        "east": "hallway_to_hallway",
        "south": "hallway_to_microlab",
        "west": "hallway_to_microlab"
      },
      "hallway_end": {
        "overmap": "microlab_generic_hallway_end_south",
        "north": "hallway_to_hallway",
        "east": { "id": "microlab_to_microlab", "type": "available", "alternatives": [ "hallway_to_microlab" ] },
        "west": { "id": "microlab_to_microlab", "type": "available", "alternatives": [ "hallway_to_microlab" ] },
        "south": { "id": "microlab_to_microlab", "type": "available", "alternatives": [ "hallway_to_microlab" ] }
      },
      "hallway_blind_end": { "overmap": "microlab_generic_hallway_blind_end_north", "north": { "id": "hallway_to_hallway" } },
      "rock_divisor": {
        "overmap": "special_rock",
        "north": "microlab_to_microlab",
        "south": "microlab_to_microlab",
        "east": { "id": "microlab_to_microlab", "type": "available" },
        "west": { "id": "microlab_to_microlab", "type": "available" }
      }
    },
    "root": "surface",
    "phases": [
      [ { "overmap": "iso_elevator", "max": 1 } ],
      [ { "overmap": "hallway_straight", "max": 4 } ],
      [ { "overmap": "hallway_curve", "max": { "poisson": 0.5, "bounds": [ 0, 1 ] } } ],
      [ { "overmap": "hallway_straight", "max": { "poisson": 0.7, "bounds": [ 1, 3 ] } } ],
      [ { "overmap": "hallway_cross", "max": { "poisson": 0.5, "bounds": [ 0, 1 ] } } ],
      [ { "overmap": "hallway_straight", "max": { "poisson": 3 } } ],
      [ { "overmap": "iso_next_level_elevator", "max": 1 } ],
      [ { "overmap": "hallway_end", "weight": 1 } ],
      [ { "overmap": "microlab", "max": 20 } ],
      [ { "overmap": "microlab_edge", "weight": 1 } ],
      [ { "overmap": "rock_divisor", "weight": 1 } ]
    ]
  }
]
