The project Unknown Krka – hidden treasures of the upper and middle course of the Krka River connects the two river banks, the two municipalities of Promina and Bukovica, the Krka Eco Campus in Puljane and the Krka Nature Interpretation Centre – well of life in Kistanje.

As part of the project, the Krka Eco Campus was opened in Puljane, as a modern interpretation, educational and volunteer centre. Near the campus are three walking trails: Roman trail, Brljan - Manojlovac, and Perice. The construction of these trails was also completed as part of the project, as an important segment of expanding the Park content offered in the northern part of the Park. Visitor content has also been expanded with two new electric catamarans, as the most suitable ecological solution for preserving the biological diversity of the Krka River.

The project Unknown Krka also includes many other educational and presentation activities, as well as cooperation with the local communities. A successful media campaign was completed with the aim of raising visibility of the visitor content expanded within the project. The campaign included five newspaper articles in the Croatian press, and a radio segment. The social media campaign was exceptionally successful, and covered the most important elements of the project: Krka Eco Campus, volunteering, walking trails, electric boats, and audio-guides. A billboardposter was created and is on display in Zagreb, Split, Zadar and Šibenik. As the crowning glory, a short film was shot, with stunning images of Krka National Park. The premier of the film was broadcast on 27 December on the Good Morning Croatia show on the national television station, HRT.

The project is based on the idea that the potential of Krka National Park, as a brand, should be used to attract visitors who are, above all, interested in natural, cultural and historical heritage, and education, in order to offer a completely different and more complete experience of the Krka. In conceiving new thematic visitor content and promoting it within this project, efforts were further invested in valorising the potential of the upper and middle course of the Krka River, thereby offering visitors a unique and complete experience of the area.