Human: Make a concise location description of a magical gorge in the wilderness with a cataract, rocks, basalt cliff, and boulders. Assistant: 
A mist-coated basalt cliff rises overhead, blocking further travel up-river. Boulders atop the cliff divide the cataract into five twisting threads that surge out in a glittering descent into the deeper water at the base of the falls. Rainbows move in a mad dance of refracted light within the mist, chasing the spray for a moment, then darting back into the shelter of the rocks, only to break out anew in another location.