Sandwiched between the freezing cold of Earth’s coldest continent and the warmth of its southernmost active volcano, the ...

The cave is made from limestone rock formations, which were compacted 550 million years ago. Over time, acidic water that flowed into the cave through cracks dissolved parts of the rock ...

Anyone visiting the caves can see streaks of white, brown and yellow along its walls - the white being a pure form of marble. When the blue lake waters ripple and reflect on the walls, the effect ...

Jeopardizing the livelihoods of the men and women who work for our national parks is abhorrent. Their jobs are not only vital ...

After the cave has been opened by the action of water, creation of some of the other features of the Marble Arch caves begin. Water, containing dissolved limestone (calcite), drips or runs from ...

This cave on a hillside near Tarbox Pond may have been a winter shelter for the Narragansetts. Find out why it's also known as "Witch's Cave." ...

Sponsored by the Greater Escarpment Organization of Door County, Soule will not just talk about the Peninsula's 40 or so sea caves, vadose (stream-formed) caves and block-creep (fault-formed ...