It is Pennsylvania’s largest cave (above or below ground) and is the state’s first entirely underground state park. Have you been there?

To enjoy the outdoors in an area with miles of shoreline camping and views, head to California's largest man-made lake where you can even stay on a houseboat.

California first responders bravely rescued eight people who were trapped in a cave rapidly filling with water – including ...

It follows a stressful battle to prove they have always been safe to operate.

The best beaches in Los Angeles County include Manhattan Beach, Torrance Beach, Zuma Beach, El Matador State Beach, Will ...

Engineers are increasingly turning to the concept of "biomimicry" for the next generation of Mars robots.

Four more men trapped in a semi-submerged Laos cave for 10 days were freed on Saturday, after one was successfully brought to the surface a day earlier, but two remained missing.

The murky “shark cave” where five Italian divers were tragically killed in the Maldives has been seen in haunting new footage ...

Now that Nevadans are past Memorial Day, camping season has officially started. Here's a look at what Hipcamp said are the ...

A popular hike, and one of two cave systems hikeable in Pinnacles National Park, has closed to protect baby bats.

To help you and your partner plan your next dream vacation, U.S. News searched far and wide to determine the state's most ...