Located in a narrow valley three hours north-west from Oslo, Rjukan counts 3400 inhabi- tants, who during the cold winter months from September to March, live completely in the shade, as the sun, covered by a 1800 meters high peak, called Gaustatoppen, can’t illu- minate the village.
For this reason Martin Andersen, a 40 year old artist, brushing up on an idea of the founder Sam Eyde, considered unworkable at the time due to a lack of technology, sub- mits to the community the intention to put on the top of the mountain three huge solar- powered mirrors, able to reflect the sun light on the town square. The project, called SOLISPEIL, became true in 2013, for the price of 5 millions Crowns.
The town of Rjukan was founded by Sam Eyde between 1905 and 1916, when the com- pany Norsk Hydro decided to start the production of Saltpetre.
The mirrors are located 450 meters above the town, and they reflect a 2000 square-feet circle of light. A solar-powered engine installed behind each mirror follows the sun move- ments during the day to maximize the effect.
Sam Eyde, during the first decade of the last Century, unable to realize something similar, decided to bypass the problem of direct sunlight absence, which also caused depressive disorders and vitamin D deficiency, building a cable car that carried workers and miners on the top of the mountain, so that they could receive the winter sunlight.
Some inhabitants decided to mark on a small notebook the days in which sun reaches the village during winter.
In April, Rjukan celebrate the SOLFEST, the return of sun from behind the mountain, with a costume parade. Often, these dresses are related to the sun or to its absence.
During the parade, the Lord of Sun is elected by the community, he remains in office for one year and keeps the title for life. The Sunborn Child is also elected, a child born near the day in which sun crosses for the first time the mountain edge and shines again on the town.