The mod edits the Vampire Lore books to add some new notifications. These new ones are only available, however, if your Vampires have gained the new Vampiric Vision trait. This trait can be gained by simply reading the vampire lore books; the same way werewolves earn the Lunar Epiphany perk.
Many signs for many different things. Take care to read them, so you don't fall for the fake ones! The gnomes will getchya! • Jungle Base Camp Arrow Sign • Jungle Base Camp Large Wooden Sign • Jungle Base Camp National Park Sign • Jungle Base Camp Rectangle Sign • Jungle Base Camp Triangle Warning Sign