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Grogarnsberget (or Grogarnsberg) is a former hill fort in Östergarn on the Swedish island of Gotland, in size second only to Torsburgen, the largest prehistoric hill fort (Swedish ''fornborg'') in Scandinavia. The castle was on the Grogarnshaupt, the northern tip of Grogarnberges. The high sea cliffs provided protection on three sides. In the south there were two long stone walls with palisades. From the castle you can see the other great castles of this region. Archaeological investigations of the outer ramparts turned up arrowheads from the late Vendel Period (550-800 AD), which provide a clue as to the dating of the castle.〔 Aleksander Loit (ed.):'' The contacts between the eastern Baltic and Scandinavia in the Early Middle Ages. International Conference, 23-25th October 1990, Riga.'' Centre for Baltic Studies, Stockholm 1992, ISBN 91-22-01503-5, p be 53 〕 A number of wooden posts were also found, probably formerly part of the palisades, that were dated to 740 AD.〔'' Nordic Archaeological Abstracts'', Viborg 1984 , p 125 〕 The castle has both an outer and an inner wall. In the west, east and south are the historic harbors Katthammarsvik, Herrvik, and Sandviken, the starting points for trips to the Baltic. There are 82 such castles known on Gotland. Most of them has an interior surface of less than . Grogarnsberget, however, measures (), making it one of the two largest hill forts on the island. House foundations from the Roman Iron Age - the Migration Period - were found inside the castle, unlike any other hill forts on the island.〔 The Grogarnsberget is also a nature reserve and it is designated a Natura 2000 area.〔 (【引用サイトリンク】website=European Environment Agency ) 〕〔 〕〔 〕 == References == 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Grogarnsberget」の詳細全文を読む スポンサード リンク
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