Summary: In 2009 Prosecco was re-mapped in sweeping changes that created an extensive new zone for the production of Prosecco DOC on the plains of the Veneto and Friuli-Venezia Giulia and elevated the traditional hillside growing areas of Conegliano Valdobbiadene to DOCG status, Italy's top denomination. One of the innovations of the revised "Disciplinare di Produzione" ('production norms') of the DOCG was the categorization of the sub-zones called "Rive"  which are

Walking along the path that leads to the summit of the Cartizze hill, the town of Santo Stefano gradually emerges in the distance, its bell tower and a few quaint houses standing as a punctuation mark amidst the harmonious mosaic of woodland patches and vineyards.  Like real-life topographic contour lines, the intricately arranged, labyrinthine rows of Glera vines ascend and wind through the characteristic, humpy “hogback” hills. Ciglioni – small, narrow cultivated terraced plots that have been utilised here since at least the 17th century – lend rigour and a sense of order to the vegetative profligacy of this landscape.