Hello. I'm in the plotting stages of a new horror manuscript which takes place in a popular national park. Since grizzly incidents occur within the park, I'm wondering if I should change names and alter landscapes of the park and the nearby cities. I don't think there's anyway I can completley mask the true identity of the park but I can make it less obvious. Is it a good idea to do so? Are there legal implications if I don't? Characters will all be one hundred percent fictional. Thanks for any help you can offer on this.