human
Produce a detailed written description of a foreboding canyon in the wilderness with a massive shard of stone partially blocking the passage.
assistant
The rocky cleft narrows and twists, a massive shard of stone partially blocking the already tight passage. Apparently having dislodged from one of the walls, the enormous shard leans precariously across the cleft, its fractured base surrounded by a small field of broken and slivered rocks which crunch and grate underfoot.