The FAKRO Light Tunnel is designed to illuminate any space of a building, including spaces where roof windows or vertical windows cannot be fitted. Installing light tunnels allows for natural ...

evidence of a tunnel at least some 130 feet (40 meters) wide and perhaps as much as 80 meters, or some 260 feet, long. It turns out the pit is actually a skylight. "This is our first direct ...

What’s required is some kind of vertical tunnel with flared sides that rises up from the ceiling and meets the skylight up ...