The agency said it has certified a 100.4-degree reading in the Russian town of Verkhoyansk last year as the highest temperature ever recorded in the Arctic.

The racing predator was seen 60km south of Batagai, north-east from republic’s capital Yakutsk.

Today, the fault measures around a kilometer in length, 800 meters in width and 100 meters in depth, making it the largest permafrost thermokarst sinkhole in the world. Its shape is reminiscent of a gigantic mollusc with a tail.

Most of the blazes are in a region that saw possibly the hottest-ever temperature above the Arctic Circle this month.

Much of Siberia this year has had unseasonably high temperatures, leading to sizable wildfires.

The temperature in Verkhoyansk hit 38 degrees Celsius on Saturday, according to Pogoda i Klimat, a website that compiles Russian meteorological data.

This time weather experts think the blackout was caused by smoke from wildfires mixing with heavy rain clouds.

The fires are now raging some 10 to 15 kilometers from the megaslump crater - a large hole in the frozen Arctic soil which highlights the dramatic speed of thawing permafrost.

Permafrost preserved the ‘oldest blood in the world’ boosting hopes of bringing extinct species back to life.