A second closed door was set into the far wall.

Set into the inside wall was something that had to be a door.

He had seen them walk into the wall with his own eyes.

The boy stopped as if he had run into a wall.

It was as if we had run into a wall.

Those suddenly stopped, as if they had run into a wall.

The problem here is that they have run into a wall.

You'd walk right into a wall because you couldn't take your eyes off.

In this case, they were often built into the wall.

The car shot directly into the outside wall in turn one.