Use our epic Southwest national parks road trip itinerary to plan your own adventure in the Southwest. Visit 11 national ...

What does an ancient lava tube in the Canary Islands have in common with space exploration? For our robotics teams, it turns out, quite a lot. A small group of our researchers traveled to ...

We travel to Flagstaff and Pinetop to hike from deep ... (dramatic music) This is a lava tube cave, so when lava flows, This is a lava tube cave, so when lava flows, it basically does what water ...

Does Arizona have walkable cities? Absolutely. From Flagstaff to Bisbee, here are the best things to do in Arizona's most walkable downtowns.

Flagstaff is a hidden gem nestled in the northern part of ... Alice had Wonderland, but these adventurers have a lava tube that’s equally mind-bending and far less prone to random tea parties. Photo ...

Flagstaff itself is a charming town with a rich history ... Whether you’re a seasoned spelunker or a first-time cave explorer, this mile-long lava tube promises an experience you won’t soon forget.

A Lunar Reconnaissance Orbiter Camera high-Sun view of the Mare Tranquillitatis pit crater, formed by a collapsed lava tube. Credit: NASA/GSFC/Arizona State University HELSINKI — Chinese ...

Recently crystallized ones are found in Hawaii. Caves over a thousand years old can be found in places like Flagstaff, Ariz. Even older lava tubes can be found in New Mexico. “It doesn’t feel ...

FLAGSTAFF — Did you know Flagstaff is home to one of the largest lava tube caves in the country? The Lava River Cave in the Coconino National Forest stretches over a mile underground and was ...

Aug. 21, after they became separated while the group was visiting the Lava River Caves, a mile-long lava tube cave inside Coconino National Forest, located northwest of Flagstaff.