In regards to this rectangular structure, I think that you have to look at the topography and ask yourself if it makes sense for an artificial structure to be here. We have all see the cropped image on this so called “structure”. Lets step back and take a more in depth look at this.
For all the images here, I grabbed them from this site: http://ida.wr.usgs.gov/html/e10004/e1000462.html
Then I used my very limited Photoshop ability to help make my points.
1 - The big picture. The red circle seems to be showing a large magma upwelling probably as a result of a meteor impact or small volcano. I could very easily be wrong about this and it could just be an eroded crater. Either way, we see that the green rectangle inside the blue circle highlights the strip of photos in this capture sequence. The “structure” in question is from the top most section of the strip. Already, I would have to say by looking at the big picture, this is probably one of the worst areas on the entire Martian surface to look for a structure. I think that when you look at the angular structure of that ridge wall in this image you can easily see that it is feasible that this is a natural formation.
2 - The You can see the ripple of the ground topography as you get closer to the edge boundary of the crater. This makes a series of peaks and troughs. In the image of the “structure” you can see that it lies along the ridgeline of one of these peaks. You can see this if you look at the blue arrows in the following image.
3 - There is other similar geology in the immediate area that is very clearly not going to be confused with a structure of any sort. This is denoted by the red encircled areas. Also, note appearance of the rock in these areas (highlighted by the yellow line). It is the same, semi porous appearance. Thus lending more support to this being a naturally occurring formation.
4 – The Math. Assuming I read the site correctly, and that is a big assumption, this structure is over a mile wide. To get this number I took the information from the website that said the image resolution was 6.08 meters/pixel. I assumed that this was for the raw sized images contained within the green rectangle. Otherwise it would have referred to the resolution of the main image in which case the structure is only 62 feet wide. I decided to go big. Either way, big or small, it would not have withstood all the forces at work in this creating this crater.
This is simply not a good place for a structure this big. It just does not make good sense. If you are going to build something this huge, it is going to be in a place of stable geology. This area is just not a viable site for such a building. Of course this is just my opinion.
