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The most effective means of preventing the return of the dead was believed to be the corpse door.

A special door was built, through which the corpse was carried feet-first with people surrounding it so the corpse couldn't see where it was going.

The door was then bricked up to prevent a return.

It is speculated that this belief began in Denmark and spread throughout the Norse culture.

The belief was founded on the idea that the dead could only leave through the way they entered.