One of many things I learned about the Grand Canyon during my visit is that no one is currently certain how it was actually created. The prevailing thought for a long time is that rivers have carved it out over millennia, but that theory has been all but debunked now. Geologists are discovering that the rock formations are such that the only way “water carving” from rivers is possible is that if there are an unwieldy number of rivers involved flowing in impossibly varied directions.
Looking at the canyon from this single viewpoint, I kind of understand the problem. It seems unlikely so many variations in the directions the rock has been cut could have been caused by no more rivers than are available to do the carving.