Waldnaab valley. Wildly romantic! Autumn is ideal for outings. Get some fresh air instead of heating air and get out into the daylight to collect vitamin D! An hour’s drive north of Regensburg, near Falkenberg in the Upper Palatinate Forest, lies a wonderful excursion destination: the Waldnaabtal nature reserve. Picturesque rock formations and 30 to 50 meter high granite cliffs line the river bed here. The river itself meanders picturesquely through the valley, where it is repeatedly diverted by large,…