182 Mu 7 Sa Yai Som

182 Mu 7 Sa Yai Som is a ferruginous mineral spring in the seventh mu subdivision of Sa Yai Som village, Nong Khai Province, where iron-rich artesian water rises through the geothermal field and provides local community members with naturally mineral-enriched water for traditional bathing within a long thermal tradition. The iron-rich character of the spring — produced as the artesian water dissolves iron minerals from the Khorat Plateau's geological formations — is recognized by local residents as a sign of mineral richness, valued within the community's heritage. The ferruginous spring at Mu 7 is one of multiple iron-rich sources within Sa Yai Som's exceptional geothermal field, where the community's traditional use of iron-enriched mineral water reflects generations of knowledge about the locally emerging spring water.