In spring time, the Gulf of Bothnia is defreezing and moving water (sounds funny but it’s months we don’t see much moving on the ground) takes over. It usually happens some point in April/May. Throughout the winter, the ice is working on the sea and on the lakes. The sounds are eerie, other-worldly. The first time I heard the ice ‘work’ it was a scary moment. Nowadays it’s just beautiful and goes perfectly alongside auroras in the sky.