Slavic castle site on Bützsee peninsula in Brandenburg, Germany.
Burgwall Altfriesack is a Slavic castle site in northwest Brandenburg, Germany, within Fehrbellin's Wustrau-Altfriesack district. Occupied from the 9th to early 13th centuries, it controlled land and water routes. A Slavic deity figure found there is now in Berlin's Neues Museum.
