Pingos are common structures in permafrost regions.

A recent study found that half the world's carbon is stored within land in the permafrost region, about two-thirds of which lies in Russia.

Sangar is in the permafrost region, where every house is built on pilings.

The cold northern permafrost regions beyond the Arctic Circle are very sparsely populated, mainly by indigenous peoples.

Increasing ground instability in permafrost regions.

It also accommodated a native sample of bacteria-derived from a permafrost region on Earth - within a cavity 26mm in diameter.

The monument is in a permafrost region.

Three general ground water systems found in permafrost regions include: Supra-permafrost, intra-permafrost and sub-permafrost.

There is a strong interdependence between permafrost and vegetation in permafrost regions.

As Ice-rich permafrost regions begin to thaw the terrestrial ecosystems turn to aquatic or wetland ecosystems.