The most likely hypothesis of the origin of fish bones, given the structure of the network, is a military use, or at minimum, shelter and storage.

They were excavated during the construction of the royal citadel Saint Sebastian, symbol of royal authority against Protestants during the reign of Charles IX in 1564. The citadel was destroyed 20 years after the reign of Henry III. It will write up an order for its destruction, to avoid ridicule.

The sandstone is a soft rock found throughout the Lower Dauphiné, where it is often the only building stone. This underground quarry is one of the major mining sites in the Drôme.Exploitées since ancient times, these quarries supplied the materials to major projects such as the medieval cathedral of Valencia College Saint-Barnard de Romans. Still used for the construction of the Canal de la Bourne in 1877, molasses is used less and less irreversibly from that time, mainly because of competition from cement.

In the tallest building was the assembling of vehicles. On the right, under the siren, the locker rooms of the workers.

Transmitted light in the ocher quarries of Provence.

Inside the headframe Couriot. This site was operated from 1840 to 1973 This is the last pit in operation at Saint-Etienne.

The limestone quarry of Chanaz has been converted into mushroom farm once the site abandoned. Here is a mushroom farm, cultures arranged in line. The staircase leads to the upper level of the quarry.

The Church of St. Nizier church is considered bourgeois. It is for this reason that it was partly destroyed in the 13th century. It is incomprehensible that this destruction was the work of followers of God, because God is love!

The two towers of the church of Saint-Nizier were not built at the same time, for budget reasons. In addition to that, its history is chaotic. The church was built on ancient ruins and partially destroyed and rebuilt.

In school, orange juice mandatory!

Mushrooms culture in a quarry.