Eventual forerunner to medieval windmills in Sweden?
June 07, 2011 01:08PM
Ancient Grooves in Gotlandic Stone, but for what purpose ??
Could they have been used as brakes for wind- or water mills ??

Please have a look at the following article: Ancient Grooves in Gotlantic Stone

Edited 6 time(s). Last edit at 06/07/2011 07:05PM by Willem.

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