Using Giant Mirrors to Light up Dark Valleys

The villages of Rjukan, Norway, and Viganella, Italy, are both situated in deep valleys where mountains block the sun's rays for up to six months every year. To illuminate those darker winter months, the two towns have built gigantic mirrors that track the sun and reflect daylight downwards. Viganella completed its huge computer-controlled mirror in 2006, and Rjukan followed suit just this month, mounting a mirror that will reflect a 600 square meter (6,500 square foot) beam of sunshine into the town square below.

Read more
Hints: View this page full screen. Skip to the next and previous photo by typing j/k or ←/→.

Most Recent

  • Noah Berger / AP

    Flying Around the World in a Solar Powered Plane

    Pilots Bertrand Piccard and Andre Borschberg successfully landed the Solar Impulse 2 aircraft in Abu Dhabi on Tuesday, after flying around the world using only the power of the Sun.

  • David McNew / Getty

    The Terrible Beauty of Californian Wildfires, as Seen by David McNew

    Getty photographer David McNew has been covering Californian wildfires for more than a decade, and has an eye for finding the visual beauty amid the horrible destruction.

  • Aris Messinis / AFP / Getty

    Photos of the Week 7/16 - 7/22

    Unrest in Turkey, a Santa Claus competition in Denmark, virtual reality in Israel, kite running in Rio, and much more.

  • Bernadett Szabo / Reuters

    Bathing in Budapest

    Hot springs at this Hungarian location have been in use since the 12th century

Join the Discussion