Goldstream Valley in Fairbanks ist easy to access by car and snow machine.

The Core-Team Chris Maio, Matthias Winkel, Jordan Hume and Josefine Lenz.

Some lakes show a high bioproductivity with lots of bubbles in the lake ice.

An aluminum barrel with a vibrating head was used to core up to 473 cm long sediment cores in one piece.

Sediment at the core bottom was sampled in the field for methane analyses.

Capping of the „short cores“ after successful coring.

Returning back from the field by skidoo

Ready to be shipped: 400 kg of 62 individual core segments are cut and will be packed.

Microbes in Permafrost under the magnifying glass: Ina and Ronnie Daanen present the topic at the „World Ice Art Championships 2017“.

Sun setting over Octopus Lake.