Someone or something was in the center of the circle.

We were now once more in the very center of the circle.

The man in black started to move to the center of the circle.

The two friends moved to the center of the circle.

It wasn't as if they were members of the same social circle.

Come into the center of the circle now, and we'll begin.

They walked to the south of the circle and looked out over the river.

A little after that, she found herself coming into view of the blue circle.

He walked to the center of the circle and beyond.

They were trying to back him against another section of the circle.