A Siege Tower was a tall wooden tower used for overtaking the walls of a fortification. Siege towers often had wheels that were covered with sacking to silence the noise.
Cluny the Scourge built a siege tower using his decimated hay carts. The tower was later destroyed by Cornflower and Brother Rufus when Cluny and his rats tried to use it to scale the walls of Redwall Abbey during the Late Rose Summer Wars.
Siege towers appear in Redwall.