Gydan

200 metres wide thermocirque seen weeks after scientists find funnel in the Yamal peninsula, caused by build up of methane.

Almost 1,300 bones of 13 species of mammals unearthed at new site on Gydan peninsula aged between 10,000 and 50,000 years old.

Svetlana Evai ate unripe berries for 15 days after getting lost in tundra with family fearing she had been attacked by brown bear.

Bulging bumps in the Yamal and Gydan peninsulas believed to be caused by thawing permafrost releasing methane.

Likely brought some 6,000 kilometres by ancient traders seeking walrus tusks, hunting birds and fur.

Dissecting them like surgical abscesses to release the gas seen as one solution to avoid future eruptions.

Young boy was laid to rest all alone with two iron knives, his feet trampling on reindeer bones, wearing elaborate headdress decorated with iron rings.

Currently there are 730,000 animals but numbers are 'unsustainable', risking disease spreading and chronic overgrazing.