Los Angeles (AFP) – Parts of Yellowstone will remain closed for the rest of the year because of extensive flood damage, managers say, with the oldest national park in the United States completely shuttered Wednesday. Roads have been washed out in the northern portion of the 9,000 square kilometer (3,400 square mile) park after torrential rainfall and snowmelt sent months’ worth of run-off into rivers in just a couple of days. All the entrances to the park, which sits chiefly in Wyoming and is home to the Old Faithful geyser, remained closed Wednesday for a third consecutive day. Images release…