Spectacular rock formations and fascinating plays of light and shadow: with their thousand-year-old stalactites and underground lakes, the caves on Mallorca's east coast form an extraordinary mineral ...

A magnificent barrier reef geologists call El Capitán had stretched for over 100 miles along the coast of a shallow inland sea that once ... of calcite unlike any cave formation I had ever ...

but were flooded when sea levels rose. Deep within these underwater caves are formations which can only be formed in dry caves - spectacular sculptural stalagmites and stalactites. The unique ...

This is, in fact, the largest sea cave in the country formed on two acres of stone floors with a 325-foot headland. The dome ...

Tonya Russell Named for its sea anemones, Animal Flower Cave is the island's only accessible sea cave, located under the North Point cliffs in Saint Lucy parish. Although it's not as popular as ...

Locals from La Jolla, the well-to-do San Diego neighborhood north of the city’s downtown, know Sunny Jim’s Sea Cave. After all, the long staircase has been in use since around 1902 ...

Follow a fearless team of scientists as they venture into blue holes—underwater caves that formed during the last ice age, when sea level was nearly 400 feet below what it is today. These caves ...

standing directly underneath the mouth of Fern Grotto Beach’s sea cave. The cave is carved into the beach’s sandstone cliffs, just below an underground spring that provides the aforementioned ...

Scientists are using these fluorescent features to understand how the caves formed and the conditions for supporting life in extreme, and even extraterrestrial, environments. Deep below Earth's ...