Kärlstenos
Kärlstenos is a term used in Scandinavian languages, notably Swedish and Norwegian, to describe the geological phenomenon of a rock or stone that has been split or fractured by the action of frost. The word itself is a compound of "kärl" meaning vessel or pot (referring to a cavity or opening) and "sten" meaning stone, with "os" often indicating a process or action. Thus, "kärlstenos" literally translates to the process of a stone becoming a vessel or cavity through frost.
This process occurs when water seeps into cracks or pores within a rock. As temperatures drop below