human
Produce a detailed written description of a chilling scene on a mountain ledge with ice and fissures in the rock.
assistant
Ice crystal needles fill the cracks in the surface of the ledge. Cold air sinks from above, yet the sudden chill is unexplainable. Although the wind gusts are freezing and the height considerable, the year 'round snow of the rim is still far, far above this point. Closer inspection proves the ice sprouts from within the rock, as the deeper fissures hold larger chunks of ice and frost.