Geotourism has been discussed as an alternative to sustainable tourism since the introduction of the concept of ecotourism and is a critical tourism paradigm with high interest worldwide. Geotourism and geopark are important heritages that must be continuously cultivated and developed for future generations. This study explored trends in geotourism through social big data analysis and suggested its meaning. As a result of the research, first, high interest was confirmed in keywords such as Jeju, tourism, Hong Kong, world, travel, Yeosu, park, program, Gwangju, product, article, tour, course, trekking, and geology. Second, essential keywords for geotourism, such as nature, geology, region, topography, resources, and environment, showed high closeness centrality. Third, as a result of CONCOR analysis, 7 clusters closely related to geotourism were identified.