Karst limestone formations flank the entrance to the Cabayugan River, which flows through a cave and into the sea in Puerto-Princesa Subterranean River Park. Next up is a national treasure ...

Getty Images/iStockphoto Tsingy de Bemaraha National Park, in northwestern Madagascar, is filled with breathtaking shards of karst limestone. Creating a landscape of sharp, jutting rock ...

In the karst, rocky limestone landscape of Thailand, a group of green creatures hides in the shadows. The predators are wrapped around branches, peaking out from rock outcrops or “close to the ...

Situated near the southern margin of the Red River Delta, the Trang An Landscape Complex is a spectacular landscape of limestone karst peaks permeated with valleys, many of them partly submerged and ...

Fortunately, for a fraction of the price, you can visit a nearby archipelago that boasts the same breathtaking karst limestone formations, dramatic cliffs, and shimmering turquoise waters.

Karst refers to the topography, which can be above or below ground, formed from the dissolution of carbonate rocks such as limestone and dolomite. The awards were handed out at the recent UIRC ...

B ack in March 2013, an unusual and tragic story emerged about a man who was swallowed by a sinkhole in Florida. No trace of ...

The family of an Australian man who suffered a heart attack while on holiday in China is desperately trying to raise funds ...

From skiing in the Alps, hiking along rocky ridges, kayaking along wild rivers, biking through dense forests, or rock climbing karst limestone cliffs.