This cave is at least 150 feet deep, and we knew we had to go inside. With ropes and harnesses, we descended into the unknown… Watch as we explore this hidden underground world! Trump threatens ...

The oldest representational cave painting dates from about 30,000 ... They were made at a time when Western Europe was dominated not by forest, but by fertile steppes that were home to an ...

World Largest Cave: Mother earth never stops to amaze us. The deeper we go, the more we discover know about it. From forest to rivers to oceans to mountains – there are many such natural bodies ...