Rocks above or underneath the water exhibit all the chromatism they have inhaled over the passage of time from the passing water. Depending on the chemical composition of the water they shine in all shades of yellow, orange, turquoise and purple sometimes covered with an additional layer of mud in yet another hue. Each segment of the rivers exhibits its own characteristc rocks, from small to really big ones, sometimes pointed and jagged, sometimes round and polished by the maelstrom of time.