Panorama of Slovenia reveals infinite beauty of green forests and meadows, of high mountain peaks, lakes, rivers and sea, of karst region with its mysterious underground world. Slovenia is a treasure of unique and singular natural phenomena such as the periodic Lake of Cerknica; karst sinkholes; periodic rivers; Postojna and Skocjan caves; the spectacular Soca river valley; the source of river Savica and its falls; Triglav national park with its seven lakes, with precious alpine vegetation and herbs; vast Panonic plains; Adriatic sea; Secovlje saltpans where the salt is extracted in natural manner and where rare species of birds live.