The Batagay megaslump, also known as the “gateway to the underworld,” continues to expand in Siberia’s permafrost and is offering scientists a rare glimpse into ancient environmental conditions.

But the size of the Batagay "crater" has earned it the title of megaslump. It's named for the nearby town of Batagay. "Permafrost is not the most, let's say, photogenic of subjects," Roger ...

As permafrost laced with buried ice thaws, the ground collapses, forming craters or lakes. This story appears in the September 2019 issue of National Geographic magazine. Sergey Zimov, right ...

“We're in that period of time now,” she said, “where the changes are so erratic and so extreme, there's a good chance your sites will either be burned, actively on fire or flooded because the ...

GalleryThese mounds are not new, but they are multiplying due to climate change and are spreading into cities, threatening some infrastructure. In the vast white expanse around Churapcha in ...

In the vast white expanse around Churapcha in eastern Siberia, the ever more rapid thaw of the permafrost is changing the landscape, cracking up houses and releasing greenhouse gases. A growing ...