Sitting atop Yakima Valley like an old saddle, Rattlesnake Hills is a unique sub-appellation of ridges and terraces that stretch 1,000 to 2,000 feet above the valley. The newest AVA in Washington, Rattlesnake Hills produces distinctive Cabernet Sauvignon, Malbec, Merlot and Syrah. Chardonnay and Riesling are bright stars among the whites. Here, as in the rest of Yakima Valley, warm days and cool crisp nights help build wonderfully balanced wines.