Feel The Weight

It is comforting to know that after spending time at the Falls, standing under such grand natural structures such as this cliff. Looking at all the wonderful rock formations up close. Wondering how it all stays up there and doesn't come tumbling down. Then getting home and finding out that an earthquake had hit KY hours before and was felt in OH....Granted it was just a little baby quake...but still!!

I don't know that much about this area, but after messing with PS on some of these pictures, I can't help but notice spots like on this image, of a blue/green residue...is that signs of copper?