The retreat of the Laurentide Ice Sheet in Canada led to the formation of moraines and up to 26 proglacial lakes scattered throughout central Canada. The deglaciation occurred from the last glacial maximum (21,000 years ago) until about 7000 years ago. Some of the lakes in the southern Ungava Bay area were fully deglaciated c. 6,000 years ago. Meltwater from the glacial prehistoric Lake Agassiz contributed to the neoglaciation during the Holocene, which resulted in an uptick of glacial activity at least as far away as Iceland.