Ramhäll's mine was opened after finding iron ore in the area in 1742 and was ran in one form or another until 1975, when it was closed.

Here is more information about the place from the local history society (Swedish, but with more pictures):

https://bygdegardarna.se/ramhall/ramhalls-gruvor/

The picuture I posted is owned by Stiftelsen Upplandsmuseet and licensed as CC-BY-NC-ND

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Ramhäll's mine was opened after finding iron ore in the area in 1742 and was ran in one form or another until 1975, when it was closed.

Here is more information about the place from the local history society (Swedish, but with more picutes):

https://bygdegardarna.se/ramhall/ramhalls-gruvor/

The picuture I posted is owned by Stiftelsen Upplandsmuseet and licensed as CC-BY-NC-ND