amazing scenery in portitsa canyon, near spilaio village, grevena, greece, where there is an old arc bridge

amazing scenery portitsa canyon spilaio village macedonia grevena greece old arc bridge amazing arc architecture balkans boulder bridge building canyon cliff climb destination europe explore flora forest geology gorge greece greek green grevena holiday landscape macedonia medieval natural nature path pebble popular portitsa ravine river rock rocky scene scenery spilaio spring stone summer track trail travel tree vacation visit walk west winter