return {
  -- metadata
  name = "tundra_highland",

  -- nodes
  node_dust = "default:snow",
  node_top = nil,
  depth_top = nil,
  node_filler = nil,
  depth_filler = nil,
  node_stone = nil,
  node_riverbed = "default:gravel",
  depth_riverbed = 2,

  -- liquids
  node_water_top = nil,
  depth_water_top = nil,
  node_water = nil,
  node_river_water = nil,
  node_cave_liquid = nil,

  -- dungeons
  node_dungeon = nil,
  node_dungeon_alt = nil,
  node_dungeon_stair = nil,

  -- climate
  heat_point = 0,
  humidity_point = 40,

  -- y values
  y_min = 47,
  y_max = 180,
  vertical_blend = nil,
}