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Sven
August 1, 2021
Hiking
These are algae ovens, used to produce soda for glass production and later iodine for medicinal purposes from the abundant seaweed deposits on the Breton coast. A laborious task, because five to six tons of fresh algae produce just under a ton of dried algae. Using brushwood and gorse fires, 200 kilograms of soda are obtained in the ovens, which in turn produces 10 kilograms of iodine.
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Sunday 26 July
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