OICC Press Geoconservation Research 2588-7343 8 1 2025 07 27 Geotourism Potential for Sustainable Geotourism Development at Phou Pha Marn, Khammouane Province, Laos 10.57647/j.gcr.2025.0801.07 EN Phomsanh Chantharangsone Kunming University of Science and Technology, China https://orcid.org/0009-0002-1033-8841 Kethsa Nanthavongdouangsy Department of Ecotourism, National University of Laos, Laos Vongphet Sihapanya Department of Ecotourism, National University of Laos, Laos Li Bo Faculty of Land Resource Engineering, Kunming University of Science and Technology, China Khamsone Latthayot Department of Geology and Minerals, Vientiane, Laos Journal Article 2025 07 27 Phou Pha Marn, located in Khammouane Province, Laos, is a karst landscape of notable geological and geomorphological interest. This study assesses its geotourism potential through the application of the Modified Geosite Assessment Model (M-GAM), integrating expert-based and visitor-oriented evaluation criteria. Five representative geosites, including Konglor Cave, Karst Tower Ridge, and the Nam Dene doline field, were assessed for their scientific, educational, aesthetic, and touristic values. The results indicate that Konglor Cave scored highest overall (0.75), with outstanding scientific and educational value, while Karst Tower Ridge demonstrated exceptional aesthetic appeal (0.90). Despite moderate infrastructure scores, the area exhibits high geoheritage potential due to its diverse karst features, cultural associations, and landscape integrity. Comparative insights from successful geotourism models in Albania, Serbia, Vietnam, and Malaysia further inform the development framework. The study concludes with strategic recommendations for sustainable geotourism planning, infrastructure enhancement, and community-based geoheritage conservation, positioning Phou Pha Marn as a strong candidate for future geotourism initiatives in Southeast Asia.