Four teams competed in a quiz called "Adventures in Nature". The event was organized by the Directorate of the Shumen Plateau Nature Park and the Anastas Stoyanov United Children's Complex on the occasion of the announcement of the Biserna Cave as part of the 100 national tourist sites.

The teams included students from the clubs "Sladkodumtsi" and "Expedition Young Archaeologist". The children had to answer 23 questions related to the tourist routes in the nature park, the 100 national tourist sites, the conditions in the "Biserna" cave, as well as the rules for safe stay in a natural environment. The teams also had to solve one creative task related to bats, routes, maps and caves.

Representatives of the Youth Council – Shumen conducted the quiz on the Kahoot platform, which allowed the answers and rankings to be clear in real time. Volunteers from the Bulgarian Youth Red Cross participated in the demonstration event. They showed how to provide first aid, and the participants tried to apply bandages and perform heart massage.
The graduates of the Profiled Science and Mathematics High School "Nancho Popovich" Marin Sarmov and Doukan Dzhelat presented a website they created, which contains numerous maps and brief user information about the Shumen Plateau Nature Park. As a reward for participating in the event, the students will have the opportunity to visit the "Biserna" cave.

