Human: Generate for me a description of a dangerous wilderness stream with branches and logs floating down the river. a dangerous wilderness stream with branches and logs floating down the river. Assistant: 
Deep grooves etched into the rocky bank mark the passage of years as the water gouges wide, rippling channels beneath the overhanging rock. Branches and logs floating down the river catch on the sides of the creekbed, causing them to swing around with almost lethal force before the momentum jars them free. A traveler attempting to ford the stream must be wary of such hazards.