INTEGRATION OF GEOPHYSICAL AND HYDROGEOCHEMICAL METHODS TO REVEAL THE KARST AQUIFER SYSTEM IN GEOTOURISM AREAS, LO AND BANGI CAVES, SOUTH MALANG, INDONESIA
Karst areas have complex hydrogeological systems resulting from the dissolution of carbonate rocks, fracture networks, and the presence of underground rivers. Lo Cave and Bangi Cave, in South Malang, are located in the Wonosari Formation and are known as active underground river sites with potential for the development...