The Two Towers: Being the Second Part of the Lord of the Rings · Chapter 5
The Ents March on Isengard
Merry and Pippin meet Treebeard in Fangorn. After hearing of Saruman's deforestation, the Ents hold an Entmoot and march to war. They destroy Isengard's walls, flood the valley with Huorns' aid, and trap Saruman in Orthanc.
Outcome
Isengard is ruined; Saruman is imprisoned; Merry and Pippin are reunited with the Three Hunters amid the wreckage.
