In less than eight days the tunnel was complete with a concrete ceiling throughout.

She drew in a deep breath and closed her eyes, face towards the concrete ceiling.

She rose to a kneeling position, reached for the top of the wall, and discovered a small space near the concrete ceiling.

The Lancaster bunker had been dug out under a thick concrete ceiling.

"We talk about the concrete ceiling or the concrete wall," she said.

It had a reinforced concrete ceiling and was far from any windows, a safe room built to help the family survive two decades of war.

It passed through a reinforced concrete ceiling and floor, into the earth below.

The tiny glow just barely illuminated a rough concrete ceiling.

Above my head was a low concrete ceiling.

I lay on the bed and stared at the concrete ceiling.