❖ Scientists say Russia is warming at least 2.5 times faster than the rest of the world.

❖ One of the massive craters in the world, famously known as the “gateway to the underworld” is growing by 35 million cubic feet every year.

❖ The huge crater situated in Serbia’s permafrost is expanding due to melting of the ground.

❖ Officially known as Batagay (Batagaika), the crater or mega slump is a rounded cliff face that was first discovered in 1991 through satellite images.

❖ It was created after a section of hillside collapsed in the Yana Uplands of northern Yakutia in Russia.

❖ This collapse exposed layers of permafrost within the remaining portion of the hillside that have been frozen for up to 650,000 years now.

❖ It is known as the oldest permafrost in Siberia and second oldest in the world.