I call this career "work site" because when I visited, a large building had been razed and another built it. In early work, the quarry was yawning, then, walls were built to block the improvised digging and luckily he stayed an access door with a concrete tunnel to allow access.

In the quarries of the 16th in Paris, in the Palais de Chaillot. These quarries have been called "catacombs Trocadero" because a part was used in the Universal Exhibition of 1900 to show the public the geology of the basement. Height 55 feet 4 inches / 17 Metes 8693 (as printed on the wall)

We call these underground quarries "quarries of Chaillot". The size of these quarries was 12 acres originally, but now it remains only a small network of underground tunnels. At Expo 1900, we used a small portion of the underground galleries to present the work of mining and underground quarries. A prototype of the Channel Tunnel was also conducted.

Completion of quarrymen, engraved in the wall of the underground quarry of Saint-Leu Esserent.

Amaury Courtois has served his apprenticeship in quarry December 17, 1853 at the age of 20 years and five months, until February 17, 1854.

A military fort place under the train station of Saint-Lazare. There's still some germans signs on the wall, describing the use of a ventilation machine.

Bedienungsanweisung:
1_ Hebel am vordereren Rohr auf
2_ Anlage betätigen mittels Fahrrad oder mittels Motor. Hebel auf Ein
3_ Hebel auf Aus
4_ Hebel am vorderen Rohr auf

They explain how the ventilation system works, with a bike or a car.

I called this part of the quarry "origin" cause the floor and the wall are like in the very begining.

Sometimes, the quarry collapse inside the walls! It is caused by the gypsum and the water.

This quarry was cutted by the cconstruction of a new building. At the back, a wall. Behind this wall, the new building.

Quarries of Saint-Cloud, in the Trocadero Park

The underground quarries of Saint-Cloud (of coarse limestone) are used as building stone. The grand facade of the Colonnade of the Louvre is partly made with this stone. The rest comes from the underground quarry of Saint-Leu Esserent. It also used the stone to build the castle of Saint-Cloud, located a few tens of meters from the quarry.

The walls of building quarry were partially dismantled to get new stones. They were used to renovate the castle of Saint-Cloud in the 19th century. However, the consequences of a large fire, the foundations were razed. The stones stolen are become useless.

in this part of the quarry, the walls are all numbered.

Road vehicle traffic in the underground quarry of Gouvieux. The culture chambers are separated by masonry walls.