human
Write a detailed description of a risky scene outside road ravine with chains.
assistant
The iron chains arc low, supporting additional chains that are bolted to platforms mounted on the outer edges of the bridge. Lanterns hung from iron hooks attached to the same platforms provide assistance at night and during bad weather. Despite the well-fortified design, the openness of the draped chains offers a dizzying vista of snow-capped mountains, jagged rock, and fast-flowing water in the ravine below.