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In J. R. R. Tolkien's fictional universe of Middle-earth, Isengard (), a translation of the Sindarin Angrenost, was a large fortress. Both names mean "Iron fortress" (cf. German ''Eisen'' and Old English ''isærn'' = ''iron''),〔http://www.etymonline.com/index.php?term=iron〕 though Isengard has a second meaning of "West Guard". ==Literature== In ''The History of Middle-earth'', Tolkien states that Isengard was built in the Second Age around the tower of Orthanc by the Númenóreans in exile. Its location was at the north-western corner of Rohan, guarding the Fords of Isen from enemy incursions into Calenardhon together with the fortress of Aglarond to its south. The river Angren (or Isen) began at Methedras behind Isengard, which also formed its northern wall. The other three sides were guarded by a large wall, known as the Ring of Isengard, which was only breached by the inflow of the river Angren at the north-east through a portcullis, and the gate of Isengard at the south, at both shores of the river. Isengard was a green and pleasant place, with many large trees and grass fields, fed by the Angren. Orthanc stood in the exact centre. During the early Third Age the land of Calenardhon became depopulated, and the last warden of Orthanc was recalled to Minas Tirith. Isengard remained guarded by a small company, led by a hereditary captain. Bit by bit though the messages from Minas Tirith decreased until they ceased altogether. After Calenardhon was given to the Éothéod by Cirion, Steward of Gondor, and became Rohan, Isengard was the sole fortress retained by Gondor north of the Ered Nimrais (excluding Anórien), although Gondor almost forgot about it. The small guard intermarried much with the Dunlendings, until the fortress became Dunlending in all but name. Orthanc however remained closed, as the Steward of Gondor alone held the keys. By 2710 the line of hereditary Captains died out and during the rule of Rohan's King Déor it was evident that Isengard had become openly hostile to the Rohirrim. Using Isengard as their base, the Dunlendings continued to raid Rohan during Déor's son Gram's rule, until during the rule of Gram's son Helm Hammerhand a Dunlending Lord, Freca and his son Wulf nearly managed to destroy the Rohirrim. The Rohirrim destroyed the invaders and blockaded Isengard, eventually taking it. A more permanent solution was now needed for Isengard, as Gondor did not wish to relinquish its claim to one of the Towers of the Realm, but at the same time lacked the strength or inclination to garrison it. A solution presented itself to the Steward of Gondor, Beren, as Saruman the White suddenly reappeared from the East, and he offered to guard Isengard. Beren gladly gave him the keys to Orthanc, and Saruman settled there. However at first he resided there as Warden of the Tower on behalf of Gondor. After him the valley became known as ''Nan Curunír'', or "Valley of the Wizard". In 2953, taking advantage of Sauron's return and the resulting distraction of the Stewards, Saruman took Isengard for himself and became Lord of Isengard. During the War of the Ring Isengard was Saruman's base of operations against the Rohirrim, and he defiled the valley, cutting down its trees. Isengard's valley was destroyed by deep pits, used for breeding Uruk-hai and smithing weapons. Isengard became home to countless Orcs, whom Saruman used to try to conquer Rohan. Eventually an army of Ents and Huorns led by Treebeard of Fangorn attacked Isengard, taking the fortress, although they could not take Orthanc, made as it was of impervious rock without seam or fault. The Hobbits Meriadoc Brandybuck and Peregrin Took, as the new "doorwardens", received Théoden King of Rohan, Aragorn and Gandalf at the gates. During the Fourth Age Isengard was restored, and the entire valley granted to the Ents. The Ents tore down the walls of the ring, and named the new forest the Treegarth of Orthanc. Orthanc became again a tower of the Reunited Kingdom of Aragorn King Elessar. 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「Isengard」の詳細全文を読む スポンサード リンク
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