Variations in the extent of Tunsbergdalsbreen over the last 9200 years are considered, drawing on evidence from a variety of sources. Stratigraphy, radiocarbon dates, lichenometry, and a variety of historical data are reviewed. It is shown that the glacier receded rapidly between 9200 and 8100 B.P., shrinking to a size smaller than the present between the latter date and 3800 B.P. A subsequent readvance culminated in the mid-eighteenth century, since which time there has been a generally increasing rate of recession.