The small Arizona town of Tubac is a true hidden gem, with walkable streets, epic stargazing, and the first state park in the Grand Canyon state.

With its roller-coaster season on the brink, the Santa Fe High boys basketball team walked into the proverbial spinning propeller blade that is the Volcano Vista Hawks during Saturday’s opening round ...

The service issued the alert for the Glen Canyon National Recreation Area, which covers more than 1.25 million acres across Arizona and Utah.

La Cueva and Cibola, probably more than any two Class 5A softball programs in the metro area, have at least one eye toward the middle of May with aspirations to play in the final game of the season.

A tourist died late last week after entering a closed, hazardous area of Hawaii Volcanoes National Park in what some say is the latest example of park visitors ignoring warning signs and wandering ...

For 16 years, visitors could sleep in a suite inside a giant cave near the Grand Canyon. Now, it's being dismantled.

Tucked away in the remote northwestern corner of Arizona, near the tiny community of Littlefield, Toroweap Overlook offers ...

Officials are investigating after a man died following an airlift from a restricted zone at Hawaii Volcanoes National Park.

A Hawaii man, 33, was found dead after crossing into a restricted section of Kīlauea caldera, sparking an overnight rescue ...

Echinus Geyser in Yellowstone National Park, a rare acidic geyser and the largest in the world, has recently been observed ...

The island of Floreana, part of the Galápagos archipelago, is steeped in mystery and lore. From its history as a prison in the 1830s to eccentric human inhabitants one hundred years later to the world ...

Since the 1970s, planetary geologists have known that volcanic features cover large swaths of Mars. Early Mariner 9 images ...