Near the end of the last ice age the water from the melting glaciers that covered the center of the North American continent needed to drain away somewhere. A natural drainage route could have been through what is now the Saint Lawrence River. But at that time it was still blocked by the massive glaciers. The water had to go somewhere and so it went south over what is now southern New York and northern Pennsylvania. A portion of the hugh volume of moving water carved away the deep channel that is now known as the Grand Canyon of Pennsylvania.
My beloved wife Alice had just died and I was a mess. My friend, John, was compassionate (I'm reasonably certain that I was no fun to be around) and invited me to join him for a week in the area. It is a lovely area but I was not in the mood to appreciate it. Only the one picture above seemed worthwhile.