Newspaper Aftonbladet said on its website that Marita Larsson was walking around Stockholm's Old Town in early March and took a photo of a swan on the river as a spring thaw melted the ice.
Thermokarst failures occur when permafrost—a layer of frozen soil in Earth's polar regions—thaws and becomes unstable, possibly releasing greenhouse gases into the atmosphere.
When you're ready to use your frozen pieces, thaw them and then you can air fry them or bake them for a few minutes and they'll be delicious and crisp.