sentences:  The Seppelt cellars include over 3 kilometres of labyrinthine tunnels ("drives") originally constructed by miners searching for gold and are now used to allow the sparkling wine to rest and develop.Sparkling Shiraz was first made at the now Seppelt site in Great Western.The other major vineyard in the area is the Concongella vineyard, operated by Best's Wines, producing a wide variety of wine types.