"The large sink" or "room of hanged people" is the locker room of minors. Besides saving space to hang clothes by a chain (with a padlock attached to the benches), the upper part of the room was warmer, facilitating the drying of clothes.

The limestone quarry of Chanaz is a smaller operating on three levels. The ceiling height is between 5 and 10m. Sometimes, holes in the floor let you see underground levels.

The network size is almost 4km developed. It was exploited from 1860 to the end of the Second World War to make cement. Portions was reused as mushroom farm thereafter (row crops and cultures in bags).

In this photo taken at the highest level, we see the intermediate level, row crop bottom right and even two holes overlooking the lower level. This is the most impressive part of the network with large volumes!

A view down to the lower level of the limestone quarry Chanaz.

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 limestone quarry of Chanaz has been converted into mushroom farm once the site abandoned.

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.