This picture just keeps flying back, and what a doozy! I've ripped into this one so many times I feel I know it backwards and forward. The amount of life, and death going on in this pictures is immense. Right in front of our eyes is a thriving city, interwoven with dead giant insect- people along with what appear to be giant humanoids. In this picture are insect people and humanoids of all different sizes. The largest insect on Earth is the Goliath beetle which can be over 5.5" long down to the Battledore-wing fairy fly which comes in at a whole 1/125" long. So you see the same thing on Mars, but they're smart and they have fingers and thumbs.
The humanoids come in different sizes too, and I've seen a few sizes, but there may be more. The small ones have built a huge metropolitan area right in this picture. It's amazing that they seem to survive in a world of such big creatures, but they do. They have built their community in, over, and around these huge insect people. If you look closely almost, every rock or boulder in this picture is an insect person or being (whatever you want to call them). How they died we'll never know, but there are plenty that are still alive out there. I have seen the large humans and the insect-people standing together, as if they do get along and respect each other, and I've seen other pictures where the insect people are attacking the humanoids. My guess is you have peaceful areas and warring areas, kind of like Earth, just different players.
Here is the picture that we're talking about. If you can download it and blow the image up in PS you will probably get a better look at the whole picture. Now this may be a NASA picture game, I don't know, but if it is they sure put a lot of time and effort into it. I've gotta tell you though that you see these dead insects in almost every shot taken by Curiosity. These "rocks" are everywhere.
Anyway enough blabbing.
This picture has been blown up out of the large picture (marked in red),
and shows a small truck surrounded by large insect-people heads(one or two with glasses on at that). The truck appears to be moving, as it appears dust is flying up from the rear tires. You can see a white truck sitting in the distance also.
Anyway, as Will says...You see what you see and I see what I see!!
mars.jpl.nasa.gov/msl-raw-images/msss/00590/mcam/0590MR0024830570400529E01_DXXX.jpg