Key:yett_hole

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Public-images-osm logo.svg yett_hole
Yett hole.jpg
Description
Part of the defensive system of a medieval doorway
Used on these elements
may be used on nodesuse on ways unspecifiedshould not be used on areasshould not be used on relations (except multipolygon relations)
Requires

entrance=*

See also

drawbar_slot=*

Status: in use

A yett hole is a hole in a doorway of a castle (like Irish towerhouses) or church through which the chain to hold the yett went. The hole pierces through the entire wall, because the chain has to be fed through it. The yett closed the doorway from the outside, whereas the door opened to the inside.

A study at Queens University Belfast has shown that a yett was more effective than a wooden (oak) door with or without a drawbar[1].

How to map

Map the entrance (entrance=*) and add the key yett_hole=* with the value yes.

You might also want to check the entrance for drawbar slots (drawbar_slot=*).

Examples

Footnotes