A summary of the present knowledge. This work presents the organization of the underground refuges dug between 13th and17th century, the way they were dug and the groups of people concerned are presented , than it puts them together according to their link with the structure of the surface, hamlet, villages, churches, fortresses, trying in this way to define their place in the everyday life.

Published by Errance publishing house, Paris, 1995, plans, coloured photos, 128pages