Grand Canyon National Park upset visitors after announcing the extended closure of the River Trail. Expected to reopen in May ...

Entombed at the Ashfall Fossil Beds State Historical Park, teeth from the rhino fossils were analyzed by researchers at the ...

Bicycling through Yellowstone before it opens for cars is a unique way to experience the park's gradual transition from ...

Beginning at 8 a.m. April 18, select entrances and roads in Yellowstone National Park will open for the summer season, weather permitting, as part of the ...

Roads have been plowed allowing autos to drive to the Norris Geyser Basin, Grand Canyon of the Yellowstone and Old Faithful.

Scientists have found previously undocumented ash deposits buried beneath the Lava Creek Tuff in Wyoming — and at least one ...

Another prequel in the Yellowstone-verse, 1923, has wrapped up after the Season 2 finale, and all we can say is it was full of losses and heartbreak, especially for Spencer Dutton.

The Yellowstone region's Beartooth Mountains feature some of the most ancient rocks in North America — as old as 3.96 billion ...

Yellowstone volcanism has produced some of the youngest rocks in North America. This same region also features some of the ...