But the tunnel stretched smooth and dark into the distance.

A tunnel, in no better shape than the shaft he had just left, stretched before him.

There was a tunnel stretching before him, almost to infinity, it seemed.

The tunnel stretched without a break all the way to Gorla.

The tunnel stretched ahead of it, empty, and dark beyond its infrared vision.

The tunnel stretched away into red gloom beyond that glow.

But in the opposite direction the tunnel stretched away darkly.

Ahead and behind, the dark tunnel stretched on forever.

The tunnel stretched for over 60 feet and was even equipped with a basic ventilation system.

"This tunnel probably stretches all the way under the school," Zeke whispered, moving his light ahead of us.