I think its a misunderstanding . I did not mean wall in the literal sense and placing troops like what happened in Troy centuries ago.
I was using that to say Russians are not behind the red lines that we see in the fortification data provided by Brady Africk. There are some readers who did make that assumption. (thinking Russians are behind the red line in the images and there are no troops in front of them)
The red line in Brady Africk's images we see is defensive line, where Russians have constructed trenches, minefields, dragons teeth et ell. And they have troops in-front of them, once again protected by layers of defensive barriers.
I have seen a ton of satellite images of the Zaphorizhia sector. But I cannot use those images to help readers understand.
Thanks.