Rappelling is not something one can do on a whim, it requires the right knowledge, preparation, and of course, a sense of ...

Though Veryovkina Cave is the second deepest at a whopping 2,212m, its discovery was a complete accident. Let's begin at its ...

About 2,000 feet deeper than the Grand Canyon, Hells Canyon was rapidly carved when a lake spilled over about 2.1 million ...

They also serve as natural corridors, enabling aquatic species to migrate through mountainous areas. ... Cave records show that US's deepest river gorge Hells Canyon is only 2.1 million years old.

Among the more interesting discoveries was a large engraved dolomite boulder, positioned in a niche along a back cave wall. The etchings resembled a turtle and date back between 35-37,000 years ago.

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.

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.

One of the world's deepest and most dangerous caves lies in Abkhazia, a disputed part of Georgia. ... Natural Wonders: Veryovkina Cave. Kristine De Abreu. Tue, March 11, 2025 at 2:27 PM UTC.