thumb|Valdarno as seen from Pratomagno
thumb|Valdarno as seen from Pratomagno
The Valdarno is the valley of the river Arno, from Florence to the sea. The name applies to the entire river basin, though usage of the term generally excludes Casentino and the valleys formed by major tributaries.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).