The voice came again, from the rock wall in front of him.

The girl sat with her back against the rock wall.

She turned to look at the rock wall on her left.

But how could light be seen through a rock wall?

He felt his way up along the cold rock wall.

The high rock wall gave him all the cover he needed.

It took half an hour to bring us to the wall of rock.

They walked over and sat down together against the rock wall.

North end, where those trees are, and the rock wall.

They picked up a wall of rock again, but it was on the left side now.