Outside the cave, it’s a blistering 100°F. Inside, temperatures range from 30°F to 37°F—a small variance with a big impact on the scenery: As team members descend deeper, blue ice gives way ...

Deep inside a labyrinthine cave in southwestern France, ancient humans who lived around 30,000 years ago carved horses, ...

If a cave dwelling conjures images of primitive camping, you haven’t seen the Cave at Dunlap Hollow.This 1,500-square-foot rock formation turned modern vacation home 50 miles southeast of ...

Marina stood at the mouth of the Rising Star cave and looked inside. Outside, it was the rainy season in this grassland part of South Africa, home to jackals and porcupines and cobra snakes and ...