Gråborg

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Gråborg is the ruin of a hillfort on Öland, Sweden. It is located in Algutsrum, in Mörbylånga Municipality. The oldest parts of the ancient hillfort are plausible from the 5th century. The hillfort was expanded in stages into the 12th century. During the Middle Ages, Gråborg was probably utilized as a protected marketplace. Gråborg was for a long time Öland's largest known ancient hillfort. In 2021, Sörby borg was discovered in central Öland, which is larger. Gråborg consists of a circular rampart, approximately 4 meters (13 foot) high. On the outside, the stones are partly in mortar, which means that the wall has been preserved quite well over time. Gråborg has three openings, one of which has been equipped with a tower superstructure, which was constructed during the Middle Ages. No remains of houses or other buildings have been found inside the hillfort itself due to the land's previous role as agriculture field which destroyed all visible traces of house foundations. However, the size of the hillfort shows that it was a central point in ancient times, perhaps a trading post. Older names of the hillfort are "Backaborg" or "Borg". Abundant archaeological finds have been made in the hillfort area, which are now kept at the Kalmar County Museum. The oldest parts of the hillfort probably date back to the 6th century. The hillfort reached its current size in the 12th century, after being expanded in stages. The interior of the hillfort is now covered in grass and other vetigation. The hillfort is elliptical in shape and measures approximately 210 by 160 meters. According to legend, Gråborg is strongly associated with the antiking Burislev Sverkersson, who grew up here with his half-sister Sofia of Minsk.