Where does “kalksten” come from?
kalksten (Danish) comes from Danish Sten, from Swedish Sten, from Old Swedish sten, from Old Norse Steinn, from Proto-Norse ᛊᛏᚨᛁᚾᚨᛉ, from Proto-Germanic stainaz, from Proto-Indo-European steyh₂-, from Proto-Indo-European steh₂- — to stand.
kalksten (Danish): limestone
Ancestry of “kalksten”, step by step