Spider Cave on Michigan’s Garden Peninsula is a small limestone cave in Burnt Bluff, part of a larger complex of caves and shelters used by people from around 1200 BC. It is most notable for ancient pictographs, especially a figure appearing to link a man and a spider, painted with mineral pigments and organic binders. Excavations in 1963 found mostly Middle Woodland projectile points with shattered tips and little domestic debris, suggesting the cave served a special purpose rather than everyday habitation. Long associated with the wider Burnt Bluff landscape and Native heritage, the fragile site later became protected and is now closed to the public.