plitsvice lakes natural park is very famous for the amazing waterfalls.. but the natural caves thre are equally intriguing.. a pic from one such caves my idea of sustainable travel related to this pic :- The art of managing the plitsvice lakes national park is really a tricky one. The area being so big , it is really tough to cover it without wheels. It was really good to see the environment friendly bus that takes visitors to the different part of the parks. Also the walking tracks that are made through the water lakes are really impressive and takes you into the heart of the place without creating any imbalance. The natural places like caves and hills and trees also seem to be undisturbed. a wonderful thing to see even if the park is flocked by so many visitors