Permafrost core description

Coring Permafrost

Coring permafrost

Packing permafrost cores

Coring through a frozen thaw lake

Ice road down the river Lena

Pingo in Central Yakutia (Khara Bulgunnyakh)

View from a Yedoma hill in direction of a thermokarst depression

Pingo in Central Yakutia

Yakutian horseman

Mathias Ulrich standing on a Pingo

Totem pole in Chyuyya (Central Yakutia)

House in Chyuyya

Coring into lake ice

Connection of a larger thermokarst depression with an drained lake

Bank of a drained thaw lake

Panoramic view of a drained thaw lake