Geothermal springs are natural hot springs that occur when groundwater is heated by the Earth's internal heat. This heat can come from volcanic activity or the decay of radioactive materials deep within the Earth. The heated water rises to the surface, creating warm or hot springs that can vary in temperature. These springs are often found in areas with significant geological activity, such as near volcanoes or tectonic plate boundaries. Geothermal springs can be used for various purposes, including spa treatments, heating buildings, and generating geothermal energy for electricity.