15 km-long ice wall emerges on Finnish lake24 Mar 2021Sysmä, Päijänne Tavastia, Finland The conditions for the creation of an ice wall on the lake occur about once a decade, when the ice is thick enough and there are large variations in the daily temperatures. As the ice melts, it creates a chasm, but when it freezes again and expands, it forces the edge of the chasm upwards, creating the 'wall' effect. |
Observations From Members 