Tangible landscape: Simulation of changing of hydrology condition due to mining activity at karst area

Indonesia is a country that has the largest karst area in Southeast Asia. With the existence of this large karst area provides advantages due to the composition of rocks from this karst area can be mined for a source of raw materials of cement. And Indonesia is the second largest miner of karst area after Vietnam. Karst area is very important area as a source of water storage, karst area can be found and identified in Indonesia using geological map from Badan Geologi dan Pusat Survey Geologi. Southern Malang is one of the karst areas in Indonesia located in East Java and is a potential area for mining activity for cement industries. This cement mining activity can change the landscape of karst area that can cause many potential disasters such as flooding, erosion, and water and air pollution. In Indonesia the technology that can be used to analyze the impact of mining from karst areas is very limited, the impact that we want to know is the surface hydrological change of the karst area landscape change. This research uses tangible landscape method in GIS to visualize the simulation of surface hydrological changes that can occur in karst area in South Malang, Indonesia.