LOS ANGELES – The stalactites and stalagmites of Sequoia National Park’s Crystal Cave, a sprawling subterranean wonder that’s been closed for four years, will be accessible again this summer. But to ...

Helmet strapped and headlamp shining, 14-year-old Wang Zichen zipped into the shadowy depths of a karst cave, part of a growing wave of underground adventure tourism in southwest China’s mountainous ...

It’s 100 degrees and the Arizona sun is beating down, sweat dripping down the faces of visitors. With camera in one hand and a water bottle in the other, guests walk up the stairs leading to Colossal ...

Amid the growing industries of agritourism and voluntourism, there exists smaller and more unique tourism businesses centered on activities as diverse as spelunking and cognac-making. Tapping into ...

Mammoth Cave National Park helps preserve the cave system that is located in the Green River Valley area of south central Kentucky. This cave system is one of the world's longest systems, expanding ...

Add Yahoo as a preferred source to see more of our stories on Google. Cave tour operations at Mammoth Cave National Park are closed, according to an alert on the National Park Service website. Other ...

Hidden River Cave's main opening is in downtown Horse Cave. For decades, Hidden River Cave was used for sewage disposal. American Cave Conservation Association began cleanup and restoration in the ...

With winter in full swing, Iceland’s leading travel agency and tour operator shares insights into the conditions ...