Chapter 319 - Where am I? 

But even after waiting some time he did not feel any pain and because of this he slowly opened his eyes. In front of him he saw a scene that he will never forget. He saw that everything in front of him got destroyed. At first he thought that he was in some kind of illusion or he was just dreaming. But then he remembered that sometime ago he was on the battlefield. Then how the hell he came to this place. Sam carefully begins to observe the surroundings. He was unable to find any humans in this place but he was 100% sure that it was a city that he was saying in front of him. He can see those destroyed buildings and those destroyed cars, etc. 

Sam needed to observe carefully and because of this, he needed to observe his surroundings. Sometime later when he finished observing his surroundings, he was 100% sure that it was the central city.