Rapa River delta in Sarek National Park, Sweden (© George Steinmetz/Corbis)

【October 15 2015】Flying over the valley or, weather permitting, climbing to the peak of Skierfe, a mountain in northern Sweden’s Sarek National Park, nets an amazing view of the Rapa River delta. The Rapa flows for more than 40 miles before dipping into the Rapa Valley where the delta begins. Rock flour – finely ground stone carried by glacial melt – colors the water bright blue. In autumn, when the birch trees turn gold and the blueberry bushes red, the azure of the Rapa seems even more vivid.Explore breathtaking Gallery from the HuluTrip homepage over the past 5 years..