[
  {
    "type": "overmap_special",
    "id": "magic_cabin",
    "overmaps": [
      { "point": [ 0, 0, 0 ], "overmap": "magic_cabin_north" },
      { "point": [ 0, 0, 1 ], "overmap": "magic_cabin_roof_north" }
    ],
    "locations": [ "wilderness" ],
    "city_distance": [ 20, -1 ],
    "city_sizes": [ 0, 20 ],
    "occurrences": [ 0, 5 ],
    "flags": [ "ELECTRIC_GRID" ]
  },
  {
    "type": "overmap_special",
    "id": "demon_spider_lair",
    "overmaps": [ { "point": [ 0, 0, 0 ], "overmap": "demon_spider_lair_north" } ],
    "locations": [ "wilderness" ],
    "city_distance": [ 20, -1 ],
    "city_sizes": [ 0, 20 ],
    "occurrences": [ 0, 2 ]
  },
  {
    "type": "overmap_special",
    "id": "black_dragon_lair",
    "overmaps": [
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      { "point": [ 1, 0, 0 ], "overmap": "black_dragon_lair_z-0_NE_north" },
      { "point": [ 0, 1, 0 ], "overmap": "black_dragon_lair_z-0_SW_north" },
      { "point": [ 1, 1, 0 ], "overmap": "black_dragon_lair_z-0_SE_north" },
      { "point": [ 0, 0, -1 ], "overmap": "black_dragon_lair_z-1_NW_north" },
      { "point": [ 1, 0, -1 ], "overmap": "black_dragon_lair_z-1_NE_north" },
      { "point": [ 0, 1, -1 ], "overmap": "black_dragon_lair_z-1_SW_north" },
      { "point": [ 1, 1, -1 ], "overmap": "black_dragon_lair_z-1_SE_north" },
      { "point": [ 0, 0, -2 ], "overmap": "black_dragon_lair_z-2_NW_north" },
      { "point": [ 1, 0, -2 ], "overmap": "black_dragon_lair_z-2_NE_north" },
      { "point": [ 0, 1, -2 ], "overmap": "black_dragon_lair_z-2_SW_north" },
      { "point": [ 1, 1, -2 ], "overmap": "black_dragon_lair_z-2_SE_north" },
      { "point": [ 0, 0, -3 ], "overmap": "black_dragon_lair_z-3_NW_north" },
      { "point": [ 1, 0, -3 ], "overmap": "black_dragon_lair_z-3_NE_north" },
      { "point": [ 0, 1, -3 ], "overmap": "black_dragon_lair_z-3_SW_north" },
      { "point": [ 1, 1, -3 ], "overmap": "black_dragon_lair_z-3_SE_north" },
      { "point": [ 0, 0, -4 ], "overmap": "black_dragon_lair_z-4_NW_north" },
      { "point": [ 1, 0, -4 ], "overmap": "black_dragon_lair_z-4_NE_north" },
      { "point": [ 0, 1, -4 ], "overmap": "black_dragon_lair_z-4_SW_north" },
      { "point": [ 1, 1, -4 ], "overmap": "black_dragon_lair_z-4_SE_north" }
    ],
    "locations": [ "forest_with_swamp" ],
    "city_distance": [ 20, -1 ],
    "city_sizes": [ 0, 20 ],
    "occurrences": [ 0, 1 ]
  },
  {
    "type": "overmap_special",
    "id": "Lake Retreat",
    "overmaps": [
      { "point": [ 0, 0, 0 ], "overmap": "lake_surface" },
      { "point": [ 1, 0, 0 ], "overmap": "lake_surface" },
      { "point": [ 2, 0, 0 ], "overmap": "lake_surface" },
      { "point": [ 3, 0, 0 ], "overmap": "lake_surface" },
      { "point": [ 4, 0, 0 ], "overmap": "lake_surface" },
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      { "point": [ 5, 1, 0 ], "overmap": "lake_shore" },
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      { "point": [ 1, 2, 0 ], "overmap": "lake_shore" },
      { "point": [ 2, 2, 0 ], "overmap": "lake_retreat_boathouse_north" },
      { "point": [ 2, 2, 1 ], "overmap": "lake_retreat_boathouse_roof_north" },
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      { "point": [ 4, 2, 0 ], "overmap": "forest_thick" },
      { "point": [ 5, 2, 0 ], "overmap": "lake_shore" },
      { "point": [ 6, 2, 0 ], "overmap": "lake_surface" },
      { "point": [ 0, 3, 0 ], "overmap": "lake_surface" },
      { "point": [ 1, 3, 0 ], "overmap": "lake_shore" },
      { "point": [ 2, 3, 0 ], "overmap": "forest" },
      { "point": [ 3, 3, 0 ], "overmap": "lake_retreat_ground_north" },
      { "point": [ 3, 3, 1 ], "overmap": "lake_retreat_z1_north" },
      { "point": [ 3, 3, 2 ], "overmap": "lake_retreat_z2_north" },
      { "point": [ 3, 3, 3 ], "overmap": "lake_retreat_z3_north" },
      { "point": [ 3, 3, 4 ], "overmap": "lake_retreat_z4_north" },
      { "point": [ 4, 3, 0 ], "overmap": "forest" },
      { "point": [ 5, 3, 0 ], "overmap": "lake_shore" },
      { "point": [ 6, 3, 0 ], "overmap": "lake_surface" },
      { "point": [ 0, 4, 0 ], "overmap": "lake_surface" },
      { "point": [ 1, 4, 0 ], "overmap": "lake_shore" },
      { "point": [ 2, 4, 0 ], "overmap": "forest_thick" },
      { "point": [ 3, 4, 0 ], "overmap": "forest_thick" },
      { "point": [ 4, 4, 0 ], "overmap": "lake_shore" },
      { "point": [ 5, 4, 0 ], "overmap": "lake_shore" },
      { "point": [ 6, 4, 0 ], "overmap": "lake_surface" },
      { "point": [ 0, 5, 0 ], "overmap": "lake_surface" },
      { "point": [ 1, 5, 0 ], "overmap": "lake_shore" },
      { "point": [ 2, 5, 0 ], "overmap": "lake_shore" },
      { "point": [ 3, 5, 0 ], "overmap": "lake_shore" },
      { "point": [ 4, 5, 0 ], "overmap": "lake_shore" },
      { "point": [ 5, 5, 0 ], "overmap": "lake_surface" },
      { "point": [ 6, 5, 0 ], "overmap": "lake_surface" },
      { "point": [ 0, 6, 0 ], "overmap": "lake_surface" },
      { "point": [ 1, 6, 0 ], "overmap": "lake_surface" },
      { "point": [ 2, 6, 0 ], "overmap": "lake_surface" },
      { "point": [ 3, 6, 0 ], "overmap": "lake_surface" },
      { "point": [ 4, 6, 0 ], "overmap": "lake_surface" },
      { "point": [ 5, 6, 0 ], "overmap": "lake_surface" },
      { "point": [ 6, 6, 0 ], "overmap": "lake_surface" }
    ],
    "locations": [ "lake_surface" ],
    "city_distance": [ 3, -1 ],
    "city_sizes": [ 4, 12 ],
    "occurrences": [ 0, 1 ],
    "flags": [ "CLASSIC", "LAKE" ]
  },
  {
    "type": "overmap_special",
    "id": "forest_tomb",
    "overmaps": [
      { "point": [ 0, 0, 0 ], "overmap": "forest_tomb_north" },
      { "point": [ 0, 0, 1 ], "overmap": "forest_tomb_roof_north" },
      { "point": [ 0, 0, -1 ], "overmap": "forest_tomb_bottom_north" }
    ],
    "locations": [ "wilderness" ],
    "city_distance": [ 20, -1 ],
    "city_sizes": [ 0, 20 ],
    "occurrences": [ 0, 1 ]
  }
]