Conducting geophysical surveys through the ice covering Lake CF8.

Augering through two meters of lake ice.

A tent provides shelter from the wind and cold while we subsample a sediment core.

We haul our gear behind snowmobiles using komatik sleds.

A short piston core recovers an undisturbed sediment-water interface.

GPR surveys using a homemade plyfood sled.

The windblown snow forms hard sastrugi.