rustic wooden boardwalk leading along the shores of a picturesque mountain lake with trees and foliage in intense fall colors

autumn balkan boardwalk brown built clear colorful colors country croatia destination fall foliage idyllic image lake lakes lakeshore lakeside landmark landscape mirror national nobody orange outdoors park peaceeful plitivice plitvice red reflect reflection season seasonal serene sightseeing slats structure travel trees turquoise unesco visit water wooden yellow