Here is the red frame (filter L4).  It shows the mound of rock and debris located against the crater wall, deep inside Endurance Crater.

   Notice how high the rock stretches above this slope and mass of tumbled rock and sand.

   The original image is here at the NASA/JPL website.

   By overlaying this and the previous image, we have 2/3 of the data needed for a full color picture.  These two frames would contain red and green, and would therefore also be able to create any mixture of the two, including yellow, orange, and other hues.

   But see how the rock suddenly seems to have a top edge?

   How can that be, when the camera has not been moved at all?  Somebody has used a photo editor and created a ragged line that is probably meant to look like the sky.  In other words, something has been chopped out of the image, and the deed covered by making it look like the crater edge is being seen, when in fact that is impossible given the location and angle of the camera.

   The original image is here at the NASA/JPL website.

   This frame is image data from filter L6, which is a blue frame.  I usually do not use L6, and choose L7 because it gives a blue that is more in line with the human visual system.  Nevertheless, this is a blue image centered on 483 nm light.

   Notice that it is exactly the same rock slide, exactly the same angle, but now the "sky" edge is different!  And also note the data dropout block- this is very important to compare to the next image.

   Typically, when a block of data is not received, the image shows a black area in its place until the data can be resent from Mars.

   When this happens, the JPEG encoding process creates a "halo" around the edge of the data dropout.  This black area shows that halo (the lighter rectangle surrounding the block).

   The original image is here at the NASA/JPL website.

   But in fact, this is no more than an area that was chopped out using a photo editor program.  How can we tell?  There are two blatant signatures.

   First, notice that there is no JPEG "halo" around the block!  This is the most obvious signature of fakery.  The edges are razor-sharp and the surrounding image has no change in intensity, completely different from what a true JPEG artifact would look like.

   The second clear sign of fakery is the short black line, one pixel in thickness, that extends from the center of the image to the left, starting at the corner of the fake "dropout" block.

   That line is the result of a "lassoing" process that is used to select an area of an image to be operated on.  The person who edited the images make a sloppy selection area and left the "spur" of the selection window active when the data erasure was performed.

   Here is the exact overlaid image and the color it would produce.

   First, notice how the "skyline" has outrageous color edges and ragged lines?  This is because the source images are not the same in those areas - even though most of the image is identical!

   The bulk of the image shows that the camera did not move or change position at all- otherwise, the entire image would be completely discolored or blurred.   But fully 3/4 of the image is okay.  So the camera did not move, the images themselves were manipulated.

   As it is, none of the images in this set were taken at once- all are at various intervals of about one minute apart.

   However, here is a good blue frame (L6) from a short while later, showing a much more realistic view of the area.  Let's convert it red and the faked L7 green and overlay them.  Where the data agrees, we will see shades of  yellow and brown.

   Where they do not match, there will be obvious red or green areas.  And ignore the large square to the right, as it is the erasure area.

   This image shows what emerges from the overlaid frames.  The pure red area is fake sky, and the edge that NASA created is clear in this image.  The yellow-brown area is where the two images perfectly match.