STAVANGER, Norway (AP) — Residents of the small Norwegian town of Rjukan have finally seen the light.

Tucked in between steep mountains, the town is normally shrouded in shadow for almost six months a year.

But on Wednesday faint rays from the winter sun for the first time reached the market square thanks to three 183-square-foot (17-square-meter) mirrors placed on a mountain.

Cheering families, some on sun loungers, drinking cocktails and waving Norwegian flags, donned shades as the sun crept from behind a cloud to hit the mirrors and reflect down onto the faces of delighted children below.

The plan to illuminate Rjukan was cooked up 100 years ago by the Norwegian industrialist Sam Eyde, who built the town to provide workers for a hydroelectric plant.

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  • People gather on a spot in front of the town hall of Rjukan, Norway, Friday, Oct. 18, 2013, where sunshine is reflected by three giant mirrors erected on the mountainside above the industrial town. AP Photo/Tore Meek, NTB Scanpix)

  • A crowd forms, those in the centre bathing in sunlight, for the official opening of giant sun mirrors in the town of Rjukan, Norway, Wednesday, Oct. 30, 2013. (AP Photo/NTB Scanpix, Terje Bendiksby)

  • A group of youths play games after the official opening of giant sun mirrors in the town of Rjukan, Norway, Wednesday, Oct. 30, 2013. (AP Photo/NTB Scanpix, Terje Bendiksby)

  • People gather on a spot in front of the town hall of Rjukan, Norway, Friday, Oct. 18, 2013, where sunshine is reflected by three giant mirrors erected on the mountainside above the industrial town. Rjukan, known among other things for its darkness in winter, is located in the bottom of a valley between steep mountains in Telemark County, some 150 km west of Oslo. The idea about mirrors reflecting sunshine to the town in winter was launched 100 years ago and will now become a reality after the official opening on Oct. 31. (AP Photo/Tore Meek, NTB Scanpix) NORWAY OUT

  • Three giant mirrors erected on the mountainside above the industrial town Rjukan, Norway, reflect sunshine towards the center of the town, Friday, Oct. 18, 2013. (AP Photo/Tore Meek, NTB Scanpix)