They've solved this problem with a giant mirror
Call it the reverse Montgomery Burns scheme. The little town of
Viganella is located amidst the Italian side of the Alps. During the
winter time, the shift in the sun's pattern makes it so that it never
clears the 1600 feet tall mountain that's close to the town. This means
that for 84 days, they do not get any sunlight. The townspeople end up
suffering from Seasonal Affective Disorder, a type of mild depression.
To solve this, the government installed a massive mirror on the side of
the mountain. It measure 26x16 feet and is computer controlled to follow
the trajectory of the Sun. The result is that starting in 2006, the
town was able to celebrate the first winter sun in 600 years!
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