{
  "values": [
    "minecraft:old_growth_birch_forest",
    {"id": "terralith:birch_taiga","required": false},
    {"id": "biomesoplenty:aspen_glade","required": false},
    {"id": "biomesoplenty:mystic_grove","required": false},
    {"id": "natures_spirit:aspen_forest","required": false},
    {"id": "regions_unexplored:mauve_hills","required": false}
  ]
}