Sancerre (wine) up the eastern most extension of the Loire Valley. The area is more than 300 miles (483 kilometers) from the Atlantic Coast and the Loire region of Muscadet, and is actually closer to the Champagne wine region than it is to the Middle Loire city of Tours and the Vouvray and Chinon AOCs. The distance from the Atlantic gives this region more of a continental climate than typical of the rest of the Loire with short, hot summers and long, cold winters that may extend the threat of frost damage into early spring. The most dominating geographical influence of Sancerre
Loire lower Loire found its source upstream of Orléans in the region of Gien, flowing westward along the present course. At a certain point during the long history of uplift in the Paris Basin, the lower, Atlantic Loire captured the "palaeo-Loire" or "Loire séquanaise" ("Seine Loire"), producing the present river. The former bed of the "Loire séquanaise" is occupied by the Loing. The Loire Valley has been inhabited since the Middle Palaeolithic period from 40–90 ka. Neanderthal man used stone tools to fashion boats out of tree trunks and navigated the river. Modern man inhabited the Loire valley around 30 ka.