Batagaika

Locals hear 'booms from the underworld' in giant ravine but now scientists say it holds secrets of the planet's past.

Destruction of trees by flames could see Batagai Depression ‘rapidly enlarge’ while remote local settlements also threatened.

Running water is one of the most soothing and relaxing sounds known to man, but here it signals the rapid thawing of ground frozen for thousands of years.

After a month of warm, dry weather and wildfires, the huge crater nicknamed ‘Mouth of Hell’ is now under direct threat.

Expedition to the world’s biggest permafrost ‘crater’ in Yakutia seeks secret of taming antimicrobial resistance.