Many visitors expect to see stalactites and stalagmites galore in Mammoth Cave but are surprised when they don't see many of ...

MEXICO CITY (AP) — Activists in Mexico have published photos of steel and cement pilings from a government project driven directly through the roofs of sensitive limestone caves on the Yucatan ...

The Makauwahi Cave Reserve sinkhole is the largest limestone cave in Hawaii. More than 7,000 years ago, its ceiling collapsed, creating a natural amphitheater.

More than 50,000 years ago, humans painted a hunting scene in a cave in Indonesia that archaeologists say represents the oldest known example of storytelling in art history.

The discovery was made in a limestone cave called Leang Karampuang on the island of Sulawesi. BRIN “Humans have probably been telling stories for much longer than 51,200 years, but as words do ...

MEXICO CITY — Activists in Mexico have published photos of steel and cement pilings from a government project that were driven directly through the roofs of sensitive limestone caves on the ...

MEXICO CITY (AP) — Activists in Mexico have published photos of steel and cement pilings from a government project that were driven directly through the roofs of sensitive limestone caves on the ...