Steel wave is the pile of roofing steel that was dumped from a truck and landed in the position as captured by the photo.
If you know about fractals, this picture is a unique result of the natural forces that surround us. The same forces also are believed to control social mood as well as the stock market. There is a theory about the forces of fractals and our society. Do a search on the keyword Elliot Wave Theory.
This picture demonstrates the natural forces at work that result in the production of this work of art.
Better days are ahead. First things will toss us about like a wave.