First contact was made in a narrow but high tunnel.

The steps lead down a few feet into a narrow tunnel.

But already the narrow little tunnel was filling with water!

She started moving along the narrow tunnel, and Peter followed her.

By its light, he saw that they were in a narrow tunnel.

I had to lower my head to step into the next narrow tunnel.

Lewis looked quickly to the narrow tunnel that was their only way out.

They came to the end of the narrow tunnel and stepped out into another large one.

Mark had left only a narrow tunnel of vision, but it was enough.

A short narrow above ground tunnel is at the bottom of the second drop.