A journey to Bulgaria right to the center of planet earth
Geothermal Borehole CC Our underground is full of carbon free energy we are currently using barely. Anyway some cultures like the Bulgarian are quite connected to this source of energy through their balneology. Geothermal heat most of us know from thermal spas which last from ancient roman times and the 19th to 20th century when …
Read more “A journey to Bulgaria right to the center of planet earth”