Fig. 2From: Geochemical/hydrochemical evaluation of the geothermal potential of the Lamongan volcanic field (Eastern Java, Indonesia)Magnified map of the investigation area around the Lamongan Volcano: red circles indicate the location of the rock samples, light blue circle the ground water samples and the dark blue circle the hot springs. The region is characterized by the occurrence of two volcanic complexes, the Lamongan and ArgopuroBack to article page