File:Trous.de.loup.png

...Devant cet obstacle, il fait creuser des trous de loup coniques de trois pieds de profondeur, en quinconce, au fond desquels on enfonce des pieux durcis au feu et aiguisés qui ne sortent de terre que de quatre doigts; ces pieux sont fixés solidement en foulant le sol autour d'eux; des ronces les cachent aux regards. Les trous de loup sont disposés sur huit rangs, distants l'un de l'autre de trois pieds (2)...

This image comes from Dictionary of French Architecture from 11th to 16th Century (1856) by Eugène Viollet-le-Duc (1814-1879).

	This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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