The core of the UNU-GTP activities is the annual six month specialized training initiated in 1979. New countries have been continuously added in the training but care is taken not to spread the efforts too thin. The programme commences in the spring (April) and is concluded in the autumn (October). It is divided into four phases: introductory lectures including a group work project, specialized training, field excursions and research project. To successfully finish the training every Fellow has to work on a project, which is presented orally before the closing ceremony, and concluded with a project report, published by UNU-GTP. The hallmark of the training is to give university graduates engaged in geothermal work intensive on-the-job training in their chosen fields of specialization. The trainees work side by side with professionals at Orkustofnun and ISOR (Iceland GeoSurvey) and other institutions in Iceland actively working on most aspects of geothermal research, exploration, and development. The training is tailor-made for the individual and the needs of his institution/country with the objective to assist developing countries with geothermal potential to establish working groups of specialists to cover most aspects of geothermal exploration and development. Priority is given to candidates from institutions where geothermal work is already under way. Upon completion of their training the participants receive a UNU Certificate.