Massive 4 kilometer Wall Found On Mars?

Although this is supposedly new info it was actually found several years ago by a mars researcher who has since died.

That being said it still a great find and could show a possible structure resembling a wall or fortification of some kind. 

The image only shows a remnant of the structure unfortunately, however that remnant is an astonishing 4 kilometers in length, and the shadow its casting would indicate thousands of feet in height.

We can assume the rest of the structure, or what remains of it is buried beneath the surface but its interesting to speculate who or what built this and why,

It reminds me of the great wall of china in some ways so maybe it was built to keep things out or possibly keep things in, depending on your perspective, watch the video report on this bizarre structure by respected researcher Suspicious0bservers.