The research in this paper refers to the definition and scientific explanation of relevant indicators (indicators and sub-indicators) that effect on the development of geoheritage (Petnička cave, gorge of the river Gradac and Trešnjica, and Taor springs) and their placement on the tourism market. By applying the GAM model, it has been proven that geoheritage in this part of Serbia represents a very significant tourism potential, which must not be neglected, and even more underestimated. The results of the research showed that the Petnička cave represents the greatest tourism potential Z32, while the Taor springs have the lowest tourism value Z22. In the future, geoheritage sites need bigger promotion, infrastructure construction and the creation of their own tourism brand.
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