Ancient wall? If it's ancient and part of Russian history, they will preserve it. Protecting it from the eyes of evil people with evil intentions. They took video of the area and all things were normal but a wall. It's a wall. What is so strange about a wall. China and other countries had walls like this. Nothing unusual about them either. Russia will preserve "ALL" her history. The good as well as the bad. People make such a big deal out of nothing. The wall was man made. Wow! Maybe later on they will find out the bears and wolves did it? Stupid things people get so crazy over, it's unreal.