[
  {
    "type": "overmap_terrain",
    "id": "field",
    "copy-from": "generic_open_land",
    "name": "drylands",
    "sym": ".",
    "color": "yellow",
    "see_cost": 2,
    "extras": "field",
    "flags": [ "NO_ROTATE" ]
  },
  {
    "type": "overmap_terrain",
    "id": "forest",
    "copy-from": "generic_forest",
    "name": "shrubland",
    "sym": "*",
    "color": "green",
    "see_cost": 1,
    "extras": "forest",
    "spawns": { "group": "GROUP_FOREST", "population": [ 0, 3 ], "chance": 13 },
    "flags": [ "NO_ROTATE", "SOURCE_FORAGE" ]
  },
  {
    "type": "overmap_terrain",
    "id": "forest_thick",
    "copy-from": "generic_forest",
    "name": "woodland",
    "sym": "F",
    "color": "green",
    "see_cost": 4,
    "extras": "forest_thick",
    "spawns": { "group": "GROUP_FOREST", "population": [ 0, 6 ], "chance": 15 },
    "mapgen": [ { "method": "builtin", "name": "forest" } ],
    "flags": [ "NO_ROTATE", "SOURCE_FORAGE" ]
  },
  {
    "type": "overmap_terrain",
    "id": "forest_water",
    "copy-from": "generic_wetland_forest",
    "name": "desert pavement",
    "sym": ",",
    "color": "dark_gray",
    "see_cost": 2,
    "extras": "forest_water",
    "spawns": { "group": "GROUP_SWAMP", "population": [ 1, 4 ], "chance": 16 },
    "mapgen": [ { "method": "builtin", "name": "forest" } ],
    "flags": [ "NO_ROTATE" ]
  },
  {
    "type": "overmap_terrain",
    "id": "sandstone",
    "name": "sandstone",
    "sym": "%",
    "color": "brown",
    "see_cost": 5,
    "flags": [ "NO_ROTATE" ]
  },
  {
    "type": "overmap_terrain",
    "id": "mesa",
    "name": "mesa",
    "sym": "%",
    "color": "i_brown",
    "see_cost": 5,
    "flags": [ "NO_ROTATE" ]
  },
  {
    "type": "overmap_terrain",
    "id": [
      "mesa_2way_v1",
      "mesa_3way_v1",
      "mesa_edge_v1",
      "mesa_corner_v1",
      "mesa_2way_v2",
      "mesa_3way_v2",
      "mesa_edge_v2",
      "mesa_corner_v2"
    ],
    "name": "mesa",
    "sym": "%",
    "color": "brown",
    "see_cost": 5,
    "flags": [ "REQUIRES_PREDECESSOR" ]
  },
  {
    "type": "overmap_terrain",
    "id": [
      "mesa_2way_top_v1",
      "mesa_3way_top_v1",
      "mesa_edge_top_v1",
      "mesa_corner_top_v1",
      "mesa_2way_top_v2",
      "mesa_3way_top_v2",
      "mesa_edge_top_v2",
      "mesa_corner_top_v2"
    ],
    "name": "drylands",
    "sym": ".",
    "color": "brown",
    "see_cost": 1
  },
  {
    "type": "overmap_terrain",
    "id": [
      "canyon_2way_v1",
      "canyon_3way_v1",
      "canyon_edge_v1",
      "canyon_corner_v1",
      "canyon_2way_v2",
      "canyon_3way_v2",
      "canyon_edge_v2",
      "canyon_corner_v2",
      "canyon_2way_v1_bottom",
      "canyon_3way_v1_bottom",
      "canyon_edge_v1_bottom",
      "canyon_corner_v1_bottom",
      "canyon_2way_v2_bottom",
      "canyon_3way_v2_bottom",
      "canyon_edge_v2_bottom",
      "canyon_corner_v2_bottom"
    ],
    "name": "canyon",
    "sym": "V",
    "color": "light_gray"
  },
  {
    "type": "overmap_terrain",
    "id": [
      "canyon_2way_ground_v1",
      "canyon_3way_ground_v1",
      "canyon_edge_ground_v1",
      "canyon_corner_ground_v1",
      "canyon_2way_ground_v2",
      "canyon_3way_ground_v2",
      "canyon_edge_ground_v2",
      "canyon_corner_ground_v2"
    ],
    "name": "canyon",
    "sym": "V",
    "color": "light_gray",
    "see_cost": 5,
    "flags": [ "REQUIRES_PREDECESSOR" ]
  },
  {
    "type": "overmap_terrain",
    "abstract": "generic_lake",
    "copy-from": "generic_water",
    "name": "lake bed",
    "sym": "#",
    "color": "dark_gray",
    "see_cost": 1,
    "flags": [ "NO_ROTATE", "LAKE" ]
  },
  {
    "type": "overmap_terrain",
    "id": "lake_shore",
    "copy-from": "generic_lake",
    "name": "lake bed shore",
    "color": "light_gray",
    "delete": { "flags": [ "LAKE" ] },
    "extend": { "flags": [ "LAKE_SHORE", "IGNORE_ROTATION_FOR_ADJACENCY" ] },
    "extras": "lake_shore",
    "mapgen": [ { "method": "builtin", "name": "lake_shore" } ]
  },
  {
    "type": "overmap_terrain",
    "id": "lake_surface",
    "copy-from": "generic_lake"
  },
  {
    "type": "overmap_terrain",
    "id": "lake_water_cube",
    "copy-from": "generic_lake",
    "name": "lake"
  },
  {
    "type": "overmap_terrain",
    "id": "lake_bed",
    "copy-from": "generic_lake",
    "name": "lake bed"
  },
  {
    "type": "overmap_terrain",
    "abstract": "generic_river",
    "copy-from": "generic_water",
    "name": "riverbed",
    "sym": "R",
    "color": "dark_gray",
    "see_cost": 1,
    "flags": [ "RIVER", "NO_ROTATE" ]
  },
  {
    "type": "overmap_terrain",
    "abstract": "generic_river_bank",
    "copy-from": "generic_river",
    "name": "riverbed shore",
    "color": "light_gray"
  },
  {
    "type": "overmap_terrain",
    "id": "river_center",
    "copy-from": "generic_river",
    "mapgen": [ { "method": "builtin", "name": "river_center" } ]
  },
  {
    "type": "overmap_terrain",
    "id": "river",
    "copy-from": "generic_river_bank",
    "extras": "river",
    "mapgen": [ { "method": "builtin", "name": "river_straight" } ],
    "delete": { "flags": [ "NO_ROTATE" ] }
  },
  {
    "type": "overmap_terrain",
    "id": [ "river_c_not_ne", "river_c_not_nw", "river_c_not_se", "river_c_not_sw" ],
    "copy-from": "generic_river_bank",
    "extras": "river",
    "mapgen": [ { "method": "builtin", "name": "river_curved_not" } ]
  },
  {
    "type": "overmap_terrain",
    "id": [ "river_ne", "river_nw", "river_se", "river_sw" ],
    "extras": "river",
    "copy-from": "generic_river_bank",
    "mapgen": [ { "method": "builtin", "name": "river_curved" } ]
  }
]
