Hells Canyon, the deepest river gorge in the United States, likely got rapidly carved 2.1 million years ago when a shifting landscape in Idaho caused a giant lake to start overflowing. That's ...

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 ...

That’s according to a new study that looked at ancient river sediments that have long been hidden away inside the canyon’s caves, which now lie high above today’s Snake River. This new work is ...

Everything’s bigger in the US, they say, and that apparently includes its river gorges. But don't be fooled by its grand size – this geological giant is a fresh-faced whippersnapper by Earth’s ...

It's a warm, dry June afternoon as 13 students, a biologist and I stand on the edge of the deepest river gorge in North America, Hells Canyon, and stare in. The students are silent. Awestruck. The ...

LEWISTON – Everyone is familiar with the sorts of signs, kiosks and brochures that dispense information about treasured places. Few have given much thought to how they are assembled or the amount of ...

ENTERPRISE — It’s Oregon’s manual of facts and figures and highlights of some of the state’s special places. It’s Oregon’s Blue Book. It’s out now and available online and soon in book stores. “We’ve ...