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Initially, Isengard was a vibrant fortress surrounded by lush greenery, as viewed in the first installment of the film series. However, Saruman's deception rapidly led to the wholesale destruction of its natural beauty as he sought to consolidate power.

In stark contrast, following the return of the Ents, Isengard underwent a significant transformation. Led by Treebeard, the forest was rejuvenated, and the fortress became known as the “Tree-garden of Orthanc,” symbolizing restoration and balance.

The Original Inhabitants and Their Fate

The original guardians of Isengard were, in fact, Gondorian soldiers stationed there to protect the northern borders of Gondor. However, a devastating plague hit during the Third Age, drastically reducing their numbers.