Yellowstone is well-known as one of the largest volcanic systems in the world. Few people know, however, that the largest-known subaerial landslide on Earth is located just next door.

A magnitude 8.3 earthquake triggered a tremendous landslide into the ocean and the wave that followed reached 1,740 feet ...

The landslide's mass is at least hundreds of millions of tons, he said. Measuring 0.8 of a mile wide, it is the largest landslide in New York history, he said.

That weird something proved to be ancient “megaslides” that occurred 18 million to 25 million years ago and are far larger than any landslide known to have occurred in the Earth’s history ...

"This is the largest landslide in New York state history. There are now 82 acres of earth that's moving as a mass. It's a pretty big deal," he says.

Here's a look at some of the biggest landslide disasters in Swiss history. This content was published on June 2, 2025 - 16:24 6 minutes I am a climate and science/technology reporter.