This looks exceedingly dangerous, but at least they're wearing helmets and have two wheels firmly planted on the path. Imagine how crazy it would be if they had no helmet and were on a unicycle! Ha! No one would ever try something that crazy.
So much about this picture is needlessly risky. In order to get the exact same picture, all the photographer would need is to stand on the road and hold her camera upside down. No climbing on walls or toe pointing required.