... for testing in your favorite viewer (XnView, of course) and simple visual entertainment. Introducing the...
Surface of Mars by NASA
Very large jpgs: file sizes to 60Mb. Dimensions to 22k x 12k.
http://marsoweb.nas.nasa.gov/HiRISE/hirise_images/
Large JPGs
Moderators: helmut, XnTriq, xnview
Large JPGs
John