huge swamp monster rises up from the black lagoon, vintage horror paperback style. generative ai

art poster screenshot cartoon tree painting blue flower drawing font pattern sketch darkness comics reflection text jungle huge swamp monster rises black lagoon vintage horror paperback style generative painted monster swamp horror scary creature green fantasy halloween evil creepy nature art forest lake alien beast wild water spooky claws dark fear river tree pond dangerous environment outdoor black everglades undead reflection terror eye nightmare legend marsh mystery twisted swamps horrific old cryptozoology stump lagoon classic vintage retro