They must have seen us on the top of the wall.

They are right at the top of the wall and hard to see.

"Why not just put them at the top of the wall?"

My hands caught at the top of the wall and I pulled myself up.

They offered easy access to the top of the wall.

Something seemed to move in the night at the top of the wall.

The top of the wall was only a few feet away.

He was not far from the top of the wall.

First: what would happen if he reached the top of the wall?

It is far above his head, near the top of the wall.