Question: Since what historic period has the area known for its Crottin de Chavignol goat cheese been inhabited?

<P0-S0>  The area of the Loire Valley comprises about 800 km2 . <P0-S1>  It is referred to as the "Cradle of the French" and the "Garden of France" due to the abundance of vineyards, fruit orchards (such as cherries), and artichoke, and asparagus fields, which line the banks of the river. <P0-S2>  Notable for its historic towns, architecture, and wines, the valley has been inhabited since the Middle Palaeolithic period. <P0-S3> The Loire Valley (French: "Vallée de la Loire" , ] ), spanning 280 km , is located in the middle stretch of the Loire River in central France, in both the administrative regions Pays de la Loire and Centre-Val de Loire. <P0-S4>  In 2000, UNESCO added the central part of the Loire River valley to its list of World Heritage Sites. <SEP> <P1-S0> Laura Chenel is a cheese maker who was America's first commercial producer of goat cheese, and helped to popularize goat cheese in America. <P1-S1>  In 1979, she began producing chèvre in the Bay Area town of Sebastopol, California, after a fact-finding trip to visit goat cheese producers in France. <P1-S2>  After several months of working to sell her product to local markets (with mixed success, due to American unfamiliarity with goat cheeses at the time), she received her first major opportunity when Alice Waters of Chez Panisse in Berkeley, California placed a standing order for her cheese in 1980. <P1-S3>  Waters listed the cheese by name on her menu (as "Laura Chenel's Chèvre", in what may have been the first American instance of goat cheese salad), which provided Chenel with a great deal of publicity. <P1-S4>  Eventually, her operation would grow to sell over two million pounds of cheese per year. <P1-S5>  The company primarily manufactures fresh chèvre, although aged cheeses make up roughly 10% of its business. <P1-S6>  In 2006, Chenel sold the company to the Rians Group, a French corporation which has purchased multiple small farming operations, while retaining ownership of her herd of five hundred goats. <SEP> <P2-S0> The Piute Pass Archeological District is an archaeological district located along Piute Creek in eastern San Bernardino County, California. <P2-S1>  The district encompasses the area around the historic Fort Piute and includes a variety of prehistoric and historic resources. <P2-S2>  The Piute Pass area was inhabited by several Native American tribes dating back to the middle Holocene epoch. <P2-S3>  The Patayan people lived in the area during the late prehistoric period, while the Chemehuevi people lived there after the Patayan and through the early historic period. <P2-S4>  Both groups left petroglyphs in the area, and remains of Chemehuevi habitation sites have also been discovered. <P2-S5>  After European settlers came to the region, the pass became the site of Fort Piute, a U.S. Army redoubt which protected travelers along the Mojave Road. <SEP> <P3-S0> Crottin de Chavignol is the most famous goat cheese of the many varieties produced in the Loire Valley. <P3-S1>  This cheese is the claim to fame for the village of Chavignol, France, which has only two hundred inhabitants.