Krąg megalityczny, Natural monument at Mokotów Field, Poland.
The Megalithic Circle consists of thirteen erratic boulders arranged in a circular pattern in front of the National Library entrance at Mokotów Field. Each stone originates from Scandinavian rock formations and displays different varieties of granite and gneiss.
The monument was created in 1999 through the initiative of Dr. Przemysław Wielowiejski and the magazine 'Living Archaeology', receiving official recognition in 2000. The stones were gathered to demonstrate the geological connection between Scandinavia and Central Europe.
The stones originate from ancient Precambrian crystalline massifs of Scandinavia, featuring gray and pink granites, rapakivi, granite gneisses, and regular gneisses.
The monument is located near the Library building and remains accessible year-round. The site serves schools and geology enthusiasts as a place to learn about how glaciers transported rock materials across Europe.
The boulder group is the richest lichen site on Mokotów Field. Two rare species, Xanthoparmelia izidiata and Xanthoparmelia loxodes, grow on the stones, both uncommon around Warsaw.
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