[
  {
    "type": "overmap_terrain",
    "id": "anthill",
    "name": "anthill",
    "vision_levels": "natural_outcropping",
    "sym": "%",
    "color": "brown",
    "see_cost": "none",
    "flags": [ "KNOWN_DOWN", "RISK_EXTREME", "REQUIRES_PREDECESSOR" ]
  },
  {
    "type": "overmap_terrain",
    "id": "ants_food",
    "vision_levels": "underground_dirt",
    "name": "ant food storage",
    "sym": "O",
    "color": "green",
    "see_cost": "full_high",
    "spawns": { "group": "GROUP_ANT", "population": [ 6, 10 ], "chance": 100 }
  },
  {
    "type": "overmap_terrain",
    "id": "acid_ants_food",
    "vision_levels": "underground_dirt",
    "name": "ant food storage",
    "sym": "O",
    "color": "green",
    "see_cost": "full_high",
    "spawns": { "group": "GROUP_ACID_ANT", "population": [ 6, 10 ], "chance": 100 }
  },
  {
    "type": "overmap_terrain",
    "id": "ants_larvae",
    "copy-from": "ants_food",
    "name": "ant larva chamber",
    "color": "white"
  },
  {
    "type": "overmap_terrain",
    "id": "acid_ants_larvae",
    "copy-from": "ants_food",
    "name": "ant larva chamber",
    "color": "white"
  },
  {
    "type": "overmap_terrain",
    "id": "ants_queen",
    "copy-from": "ants_food",
    "name": "ant queen chamber",
    "color": "red"
  },
  {
    "type": "overmap_terrain",
    "id": "acid_ants_queen",
    "copy-from": "ants_food",
    "name": "ant queen chamber",
    "color": "red"
  },
  {
    "type": "overmap_terrain",
    "id": "ants_fungus_colony",
    "copy-from": "ants_food",
    "name": "ant fungus colony",
    "color": "light_gray"
  },
  {
    "type": "overmap_terrain",
    "id": "acid_ants_fungus_colony",
    "copy-from": "acid_ants_food",
    "name": "ant fungus colony",
    "color": "light_gray"
  },
  {
    "type": "overmap_terrain",
    "id": "ants",
    "vision_levels": "underground_dirt",
    "name": "ant tunnel",
    "color": "brown",
    "see_cost": "full_high",
    "spawns": { "group": "GROUP_ANT", "population": [ 4, 6 ], "chance": 100 },
    "flags": [ "LINEAR" ]
  },
  {
    "type": "overmap_terrain",
    "id": "acid_ants",
    "vision_levels": "underground_dirt",
    "name": "ant tunnel",
    "color": "brown",
    "see_cost": "full_high",
    "spawns": { "group": "GROUP_ACID_ANT", "population": [ 4, 6 ], "chance": 100 },
    "flags": [ "LINEAR" ]
  }
]
