[
  {
    "id": "crypt_map",
    "type": "GENERIC",
    "category": "books",
    "name": { "str": "crypt map" },
    "description": "This odd, hand drawn map points the crypts in its range. There's no actual road going there, but it's an enough information for you.",
    "weight": "30 g",
    "volume": "250 ml",
    "price": "0 cent",
    "to_hit": -1,
    "material": [ "paper" ],
    "symbol": "#",
    "color": "red",
    "use_action": {
      "type": "reveal_map",
      "radius": 180,
      "terrain": [ "crypt1", "crypt2" ],
      "message": "You add the Crypt(s) to your map."
    }
  },
  {
    "id": "vampcave_map",
    "type": "GENERIC",
    "category": "books",
    "name": { "str": "cove map" },
    "description": "This odd, hand drawn map only points the vampire cove. There's no actual road going there, but it's an enough information for you.",
    "weight": "50 g",
    "volume": "250 ml",
    "price": "0 cent",
    "to_hit": -1,
    "material": [ "paper" ],
    "symbol": "#",
    "color": "red",
    "use_action": {
      "type": "reveal_map",
      "radius": 180,
      "terrain": [ "vampcave_entrance" ],
      "message": "You add the Vampire Cove to your map."
    }
  }
]