Just 30 minutes from downtown Flagstaff, Sunset Crater Volcano National Monument offers a striking look at northern Arizona’s explosive past.

You'll feel like you're walking though Hawaii's national park when you tackle this short trail at Craters of the Moon in Idaho.

Geology is full of detective stories about the Earth's history, and a new paper in Geology by University of New Mexico ...

The Old Caves Crater Trail is one of the best hikes in Arizona for exploring caves built by the region's earliest inhabitants ...

Tzion Maron became separated from his family at Lava River Caves northwest of Flagstaff on Wednesday, according to Coconino County Sheriff's Office.

One hospitalized after falling more than 20 feet at Adams Canyon The other rescue was more technical as the High Angle Rope Rescue team extricated the person from the Lava Tube cave.

Lava River Cave, one of the top attractions on the Deschutes National Forest, will open this year on May 16. For those traveling to the cave by vehicle, tickets for timed reservations to enter the ...

BEND, Ore. (KTVZ) — Timed reservation tickets for Lava River Cave will be available starting Friday, May 9, for the 2025 season, the Deschutes National Forest said. Lava River Cave opens for the ...

We travel to Flagstaff and Pinetop to hike from deep underground to the top of a fire watch station.

Go spelunking at Lava River Cave is ranked #15 out of 18 things to do in Flagstaff. See pictures and our review of Go spelunking at Lava River Cave.

From the famous Kubla Kahn formation at Kartchner Caverns to the deep history of Colossal Cave, here's what to know about 10 thrilling Arizona caves.