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Segedunum was a Roman fort at modern-day Wallsend, Tyne and Wear, England, UK. The fort lay at the eastern end of Hadrian's Wall (in Wallsend) near the banks of the River Tyne, forming the easternmost portion of the wall. It was in use as a garrison for approximately 300 years, almost up to 400AD. Today, Segedunum is the most thoroughly excavated fort along Hadrian's Wall, and is operated as Segedunum Roman Fort, Baths and Museum. ==History== The Roman wall originally terminated at Pons Aelius (Newcastle upon Tyne). Work began at Pons Aelius in 122AD and proceeded towards the west. Subsequently, in about 127AD, the wall was extended further east, possibly to protect the river crossing at Pons Aelius. A four-mile section of the wall east from the fort of Pons Aelius, passing through present-day Byker and ending at the new fort of Segedunum was built. The new section of wall was narrower than the sections previously built, being on a foundation of . Unlike the rest of the wall, the extension had no vallum.〔Frank Graham, Roman Wall, Comprehensive History and Guide (1979), Frank Graham, ISBN 0-85983-177-9〕 The fort measured from north to south and from east to west, covering an area of . A wide ditch and an earth embankment surrounded the fort on all sides. It had four double gates with the east, west and north gates opening outside the wall and only the south gate opening within the wall. The wall joined to the west wall of the fort just south of the west gate. From the southeast angle of the fort, a wide wall ran down to the riverbank and extended at least as far as the low water level.〔 There is evidence that there was an extensive vicus, or village surrounding the fort, including the area to the north of the wall.〔 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「Segedunum」の詳細全文を読む スポンサード リンク
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