AbstractThe author discusses the glacial episodes in the Baltic area during the Younger Dryas time in the light of the model of Denton&Hughes presented in the final report of the CLIMAP project. The model implies a main, warm-based ice dome in the Gulf of Bothnia. The following sequence of events and their causes are discussed.1.Bölling-Alleröd deglaciation reached north of the Younger Dryas marginal zone.2.When the receding ice margin passed the Billingen area, South Sweden, the Baltic Ice Lake was lowered to the ocean level.3.At the beginning of the Younger Dryas time the thinning of the Barents Sea ice resulted in an intense outflow of icebergs into the North Atlantic.4.This outflow caused a cooling of the North Atlantic climate and a lowering of the ice dome over the Gulf of Bothnia.5.The lowered Gulf of Bothnia dome began to collapse.6.Advancing lobes from the Gulf of Bothnia dome reached the outermost Younger Dryas limit. They were characterized by a marginal zone with compressive, divergent flow, behind which the flow was extending.7.The climatic deterioration caused expansion of ice spreading from the Scandinavian mountain range.8.The advancing ice in the west blocked the passage between the ocean and the Baltic basin, and the Baltic Ice Lake was redammed.9.The marginal zone broke up as dead-ice, and through it the Baltic Ice Lake was finally drained.10.Because of the lowering of the lake level the ice lobes were grounded and a slower, more continuous recession of their fronts started.11.The changes of water level in the Baltic basin had created basal crevasses in the ice in which debris could form De Geer moraines. Along the crevasses tabular icebergs were broken off.12.In interlobe areas glaciofluvial sediments accumulated in crevasse systems to form broad eskers and deltas.