But some experienced cavers are permitted to explore five "wild" caves in the park.

VOA: special.2009.12.07

The Dead Sea Scrolls were found in caves in the Judean desert.

死海古卷是在朱迪亚沙漠的山洞中发现的。

耶鲁公开课 - 旧约导论课程节选

The researchers made their discoveries last year in two caves in southwestern Germany.

VOA: special.2009.08.18

Along the walls and in the caves are designs or symbols carved into the rock or painted on it.

VOA: special.2010.07.05

Experts are not sure whether this tribe placed bodies in caves as part of burial ceremonies or for other reasons.

VOA: special.2010.11.10

Bones,hair,feathers, even the remains of plants have been found in deep, dry caves high in the rock walls.

VOA: special.2009.10.07

So studying the organisms in these oxygen-free caves gives clues about the past.

VOA: special.2010.11.10

In nineteen twenty-three, scientists from the National Geographic Society explored the caves.

VOA: special.2011.04.11