was located on the border between land and sea. That resulted in kettles, glacial erratics and other specific landforms. When the ice was melting, iron was released from the bedrock into the groundwater and became exposed iron oxide (ochre). That gave rise to a red-colour soil in some parts of Riddarhyttan, especially in the area called Röda Jorden (red earth).

History

People started to extract iron from the red earth in the Riddarhyttan

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