A cave in northern Greenland shows the Arctic once thawed under mild conditions. Scientists say even small warming can trigger huge changes.

Visiting sea caves isn’t just about seeing a cool grotto carved out by the ocean — it’s also about the journey to find these caverns. There are cliffs to descend, rocks to scramble, tide pools to ...

An unstable cave on La Jolla’s coast prompted emergency work starting Friday, Aug. 9 to reinforce the cave and the roadway above it, San Diego officials said. Due to the stabilization work required, ...

This massive underwater sinkhole off the coast of Belize is the world's largest natural formation of its kind and a popular destination for scuba divers. Inside the 400 ft deep sinkhole, you'll find ...

After more than a decade as a haven for partiers and vandals, the Cave Landing-Pirate’s Cove area has finally become a San Luis Obispo County park and will get a much-needed face lift by the end of ...

UPDATE (2:40 p.m.) — Cal Fire SLO representatives report that the one person rescued from the water was not hurt and was released by the San Luis Obispo County Sheriff's Office. Emergency personnel do ...

Long-awaited clean-up efforts around Pirate’s Cove began on Thursday — and visitors should be prepared for parking lot closures. San Luis Obispo County park rangers and contractors this week began ...

WILLIAMSON COUNTY, Texas — Crews returned to work Wednesday to fill a cave in Williamson County’s Brushy Creek neighborhood. Work had temporarily stopped after a new chamber was found earlier this ...