Every evening, as the sun goes down, thousands of adult bats fly out of the natural entrance of the cave.

VOA: special.2009.12.07

Doctoral student Diana Zardaryan of the Institute of Archeology found it in a cave near the border with Iran and Turkey.

VOA: special.2010.08.03

While the adults go out at night for food, the young bats hang out in the cave for four or five weeks.

VOA: special.2009.12.07

Yet once he had enough paths built to welcome visitors, no one seemed interested in his "bat cave."

VOA: special.2009.12.07

The researchers also found large containers of wheat, barley and apricots in the cave, along with a broken pot and sheep's horns.

VOA: special.2010.08.03

I was very frightened. The sounds of the cave and the sight of my body forced me away.

VOA: special.2010.07.10

An elevator lowers you into the world of Carlsbad Cavern, the big cave at Carlsbad Caverns National Park.

VOA: special.2011.04.11

Scientists believe sandals found in the Arnold Research Cave in the American state of Missouri are about seven thousand five hundred years old.

VOA: special.2010.08.03

I can only tell of the ten years my dead body lay undiscovered in an Arizona cave.

VOA: special.2010.07.10

I slowly backed to the opening of the cave. I turned to look at the Arizona night.

VOA: special.2010.07.10

It went up and up. I followed the trail for several hundred meters more until I came to the mouth of a large cave.

VOA: special.2010.07.10

From a cave room you can see far up and down the canyon and imagine what life was like there seven hundred years ago.

VOA: special.2010.07.05

Visitors can climb up wood ladders to see the inside of several of the cave homes.

VOA: special.2010.07.05

The authors of the book "Carlsbad Cavern: The Early Years" say Jim White took the job for the chance to keep exploring the cave.

VOA: special.2009.12.07