On October 29, 2025, the ELTE József and Erzsébet Tóth Hydrogeology Chair joined the fall Little Scientist Camp programs, which ELTE announced for the first time this year as a continuation of the highly successful summer camp. The goal: to introduce elementary school children to the natural sciences in a playful and experiential way during the fall break at the ELTE TTK campus in Lágymányos.
In the five-station program entitled “Secret Paths of the Earth’s Depths,” participants:
- tried out a spectacular experiment that vividly demonstrated the spread and long-term effects of underground pollutants;
- learned about the underground phase of the water cycle and the characteristics of underground waters; explored the underground path of waters with different dissolved substance contents through their own measurements;
- watched the Chair’s educational short films
- – videos presenting Budapest’s thermal waters and their potential uses: short film 1, short film 2;
- – in another room, videos presenting the concept of NaBa-MAR, i.e., nature-based targeted groundwater recharge: short film 3, short film 4.
- The films were followed by a joint brainstorming session and discussion, after which the children tested their newly acquired knowledge with a quiz;
- they presented their favorite water experiences or experiences of the day in a creative drawing task; the most imaginative creations were rewarded.
During the program, the children experienced the joy of discovery as real researchers, while learning in a playful way about the dynamics and protection of groundwater and the importance of preserving nature.

