Water no longer flows under this bridge with a span of 180 feet (54.9 meters), a height of 106 feet (32.3 meters), and a thickness of 9 feet (2.7 meters). It's considered to be in old age.
Look at the soil in the foreground of this image. What do you see? Yes, it is biological soil crust. It looks to be very well established except for the many informal trails crisscrossing it.
Natural Bridges National Monument
Cedar Mesa, Utah
Part of the Great American West series.
I'll be busy the next few weeks. Commenting will be spotty at best.