While in a rage, you can deal tremendous damage to objects.
Prerequisites: Str 25, Improved Sunder, Power Attack, rage 5/day.
Benefit: While in a rage, the character ignores the hardness of any object he or she strikes. Also, double the character’s Strength bonus for the purposes of any Strength check made to break an object with sudden force rather than by dealing normal damage (including bursting bindings, such as ropes or manacles).
Source: Standard Reference Document under Open Game License v1.0a, which updated this feat originally published in the Epic Level Handbook, page 66.