|The following is based on Fallout: Brotherhood of Steel and has not been confirmed by canon sources.|
A rotten toe is a quest item in Fallout: Brotherhood of Steel.
Rotten toe is one of Harold's missing parts and can be found in the Docks Warehouse area of Los. It is in an alley near a small church, behind a door that is activated by a button. For a little more information about it see Find Missing Pieces.
Docks Warehouse District - in the alley behind the church.