How Rjukan brings sunlight around the mountain
Rjukan lies in a narrow valley beneath steep mountains. In winter, the sun stays so low in the sky that the ridges block its direct rays from reaching the town center. The sky still brightens during the day, but the town’s familiar streets and square miss the warmth and light of direct sunshine for months.
Mirrors that follow the winter sun
The solution is a set of large, motorized mirrors high on the mountainside. These are heliostats: mirrors that turn to track the sun and keep its rays aimed at a chosen spot. As the sun moves across the sky, the mirrors adjust, reflecting a patch of light down to the town square.
The mirrors do not create sunlight or illuminate the whole valley. They redirect a limited beam, making a particular public space sunny when the surrounding terrain would otherwise keep it in shadow.
A shared place in the sun
The installation gives residents a sunny gathering place during the season when the sun cannot reach the valley floor directly. Its effect is both practical and symbolic: the town’s geography still sets the limits, but careful positioning lets people experience a small, bright piece of winter daylight together.
