Flood watermarks over the centuries.  Note the highest is also the most recent.
{"Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image Artist": "Glenn Forrest", "Image Copyright": "Copyright 2014 Forrest Photography, Glenn Forrest", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "248", "Thumbnail JPEGInterchangeFormatLength": "9645"}