It's those 'wheels' or 'disks' again ... this image is good example of the diversity of patterns & colours which these 'wheels' or 'disks' are found to display.
This is a particularly good close up of one these 'wheels' or disks' ... the colours are not correct, I know that ... but it is the apparent scenery within the wheel or disk which is amazing ... is this by pure chance? Double click for a larger image ....does this support the conspiracy theory about Stargates?
Another one from the 'Martian Collection' and a personal favourite of mine ...