 In the Hunter Valley Penfolds has a small experimental planting.According to Murray Tyrrell of Tyrrell Vineyards, one night he jumped the barb wire fence of Penfolds and pruned a couple cuttings from Penfolds' vine and planted them in his vineyard.Whether or not that story is true is hard to prove but Tyrrell's 1971 Vat 47 Chardonnay is widely credited with ushering in the Australian Chardonnay craze of the late 20th century.