She glanced up and down the dark curve of the tunnel.

Volyova finished her cigarette in silence and then looked away from the Captain, along the dark curve of the corridor.

She might think she was hidden just fine, but Lou could see the faint dark curve of the top of her head.

The dark curve of Hodgepile's head moved back-and back.

They could hear rolling wheels and boisterous laughter around the dark curve of the largest tunnel.

Between two dark curves the road to the prison briefly appeared.

Digger went back to the viewport and stared out at the long dark curve of the planet.

They moved down the dark curve of it quietly.

His hand appeared from beneath the fur and he placed it up on the dark curve of his right shoulder.

The dark blue curves show the actual locations of the isopleths in three dimensions.