Standing at the entrance of the tunnel I could see ahead of me a darkness so absolutely black it seemed a solid.

VOA: special.2009.12.07

As you stand inside the tunnel, you see the video images reflected many times in the mirrors.

VOA: special.2009.03.11

In the middle of the room is a tall triangular tunnel that is covered in mirrors.

VOA: special.2009.03.11

At the end of the tunnel is a wall of brightly colored moving video images.

VOA: special.2009.03.11

A common design looks like a high tunnel.Unlike a greenhouse, which uses a heating system, a hoop house is heated by the warmth of the sun.

VOA: special.2009.12.22

Polly Ann and her son cheered when the machine was pulled from the tunnel.

VOA: special.2009.02.21

Nevertheless,I forged ahead, and with each step the tunnel grew larger, and I felt as though I was wandering into the very core of the Guadalupe Mountains."

VOA: special.2011.04.11

Instead of windows, the new systems used tunnel fans to circulate air.

VOA: special.2009.09.08

This meant creating a tunnel more than one-and-one half kilometers long.

VOA: special.2009.02.21

Another room is a long black and white tunnel.

VOA: special.2010.03.05

Because the tunnel economy is clandestine, it's difficult to estimate just how much money is being made.

VOA: standard.2010.06.17

Finally a canal company official showed up and set fire to sheaves of green corn to literally smoke the boatsmen out of the tunnel.

VOA: standard.2010.04.29

So does one long tunnel, just wide enough for one boat to get through.

VOA: standard.2010.04.29

On Friday, the weather caused five trains to fail inside the Channel Tunnel.

VOA: standard.2009.12.25

After six Eurostar trains broke down in or near the tunnel that runs under the English Channel, the system has been suspended while engineers troubleshoot the electrical problems thought to have been brought on by condensation.

VOA: standard.2009.12.21