The Norwegian Journal Frost i Jord (Frost Action in Soils) will cease to be published. The first issue was published in 1970 as part of a large research programme on frost action in soils. It was later taken over by the Norwegian Committee on Permafrost. The activity of this committee has been reduced after the V International Conference on Permafrost in Trondheim in 1988. The last volume was issued in 1988 after the IPA-Conference. We wish to thank all contributors and readers of the journal during its 20 years of life.