Helm’s Deep was the largest fortress of Rohan, where the guards of the Fords of Isen lived. Originally named Aglarond, it was, along with Angrenost (Isengard), one of two Gondorian strongholds built to guard the Fords of Isen. During the war with the Dunlendings under Wulf, the Rohirrim under King Helm Hammerhand and many of his people sought refuge in the keep, where they held out during the Long Winter of TA 2758 – TA 2759. During the War of the Ring, the fortress guarding Helm’s Deep again became the refuge of some of the Rohirrim, now under King Théoden, and the Battle of the Hornburg was fought there. It was during this battle that the Deeping Wall was destroyed by Uruk-hai explosives. After the War of the Ring, the demolished Deeping Wall was rebuilt by the people of Rohan, with the aid of the Dwarves.