The recent discovery of an inscribed stele in the foundations of the Late Archaic temple at the sanctuary of Poggio Colla (Vicchio, FI) sheds new light on the nature of cult at the site. The stele is one of the longest Etruscan sacred texts and is from a secure archaeological context. It is also the earliest extant non-funerary sacred text (excluding simple votive inscriptions). The object, currently undergoing conservation, promises to provide new evidence for Etruscan ritual, literacy, and language.