Multiple funnel-like chimneys form the back of the canyon, where sediment-laden water has carved repetitive shapes in the sandstone, inching its way back through time. These cone-shaped circular funnels are narrow at the top and widen progressively as they descend to the bottom.
This has me mystified. Natural funnels the world over form with wide mouths at their tops that narrow as the funnel goes down. The shapes in this photograph depict inverted funnels. Even when I try to understand this via methods that include something like the Coriolis effect, they do not make full sense to me. There are numerous rock funnels like these in this region, but few that feature multiple funnel shapes like this canyon does.