There is far too much to mention, but a few snippets you might see and glean include small town which is dating from 339 BC, river which started under waterfall, Ice Age, melting, salty and fresh water, sea level which was on 95 meters lower, First Croatian hydro power station which was the second AC-generating hydroelectric project in the world, unrecognized state of Serbska Krajna, Croatian operation “Storm” against unrecognized state, eight waterfalls (one of them is underwater waterfall), effect of calcareous sinter, the most powerful family in Croatia in the middle Ages, Romans (how could I forget the Romans), trade routes, an ancient Roman roads, hajduks, small balustrade lookout point built for monarch whose nephew assassination started World War one, karst phenomenon, mills, caves, only poisonous snake, and quite a lot more.