During the end of the 1800’s, Gerhard De Greer, a professor in geology at Stockholm University, developed a method for measuring and comparing the years and years of sediment layers formed at the bottom of lakes. The idea was to create a varve chronology for dating the emergence of the landscape all the way back to the end of the ice age. In the early 1900s, he realised that the empty Lake Ragunda was the very place he needed to succeed in his work. The mighty layers of sediment he studied were easy to reach here and after many years of work he finally succeeded in dating the end of the last ice age! De Geer is internationally recognised as one of the early 1900’s most important geologists and the creator of what is now internationally known as varve chronology. Lake Ragunda is a key location for the understanding of his pioneering work

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