ThinkGeoEnergy is the leading geothermal news website, providing updates on the geothermal power sector and large-scale direct use applications world-wide.
The pictures on this account on Flickr are absolutely royalty free and open-source, so please use them if you want. I would ask you though to use them in context of geothermal energy (e.g. in the case of events) and I kindly ask for an attribution and reference to ThinkGeoEnergy.