A rare wild mushroom called Lanmaoa asiatica can trigger vivid “tiny people” hallucinations when undercooked — a striking, clinically recognized syndrome reported across Papua New Guinea, China, and the Philippines. Despite decades of stories, scientists still haven’t identified the compound responsible. Early testing shows the mushroom contains no known psychedelics, suggesting an entirely new psychoactive molecule. Because different cultures independently report the exact same lilliputian visions, researchers believe the effect is biological, not folklore, and ongoing chemical and genomic work is now narrowing in on what makes this mushroom uniquely hallucinogenic.