Baydzharakh

Baydzharakhs form owing to thermokarst activity in periglacial areas.

[2] In the first phase of the ice melting process baydzharakhs have a pillar-like shape.

When the ice mass in the surrounding rocks is high, they swell and form rounded depressions known as alas (Алаас) in Yakut.

[5] In 1950 a baydzharakh was the last vestige of now disappeared Semyonovsky Island in the Laptev Sea.

They often occur together with Yedoma (Едома) complexes and in areas with ice-wedges of considerable thickness.