A secret tunnel, a hidden sea cave, and a history full of smugglers—Sunny Jim’s Sea Cave in La Jolla, California, is unlike ...

Spelunking, or cave exploring, is an adventure of a lifetime for those who wish to discover the hidden wonders beneath the ...

Deep inside Kanohina, hundreds of yards from ... of Hawaii’s lava tubes have been mapped. “The deep sea, outer space, and caves: Those are the only frontiers left,” says Coons, who does ...

Scientists have found ancient nail tooth shark fossils deep inside Mammoth Cave in Kentucky, revealing new information about ...

From crystal-clear waters to amazing rock formations, cave swimming is an adventure that is both thrilling and peaceful. Here ...

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 ...