Caves are some of the most interesting and perplexing features on our planet. Here's how they form! Oh yeah and I did the ...

The Grand Canyon harbors a healthy population of bighorn sheep, but they are most likely seen while hiking deep into the ...

A team of USGS researchers in Flagstaff are working to develop an all new geologic map of the Grand Canyon region.

Arizona is known for its spectacular scenery and popular national parks. One is also among the deadliest parks to visit in ...

Discover an underrated hiking destination that offers a challenging adventure and soul-healing beauty in the heart of the Midwest.

While many travel destinations are becoming overrun with tourists, there are still some beautiful hidden gems in the US from ...