Hike through secret slot canyons, spot endangered California condors, visit sacred Navajo sites, and kayak a stunning 10-mile ...

Geologists have uncovered compelling new evidence that reshapes the understanding of Hells Canyon, America’s deepest river gorge. In a recent study, researchers revealed that this dramatic geological ...

CC0 Usage Conditions ApplyClick for more information. In the 19th century, many people believed that landscapes like the Grand Canyon were shaped by volcanoes and earthquakes. But one American ...

The origin story of Hells Canyon, North America's deepest river gorge, has long been unclear to scientists. But new research estimates it formed about 2.1 million years ago when a dramatic flood event ...