Gangamoola is a part of the Gangamoola-Aroli-Gangrikal range of Western Ghats. Having an altitude of 1458 meters above sea level, the hill is within the boundaries of the Kudremukh National Park. The hill is thickly forested and receives an annual rainfall of 575 cm. The area in the vicinity of the hill is rich in magnetite-quartzite deposits which yield iron ore.