This room was called the Grand Rex because of his height and the sloping floor in tiers remembers a famous parisian movie theater. In winter, there are many bats in this quarry, thank you not to disturb them!

Marthe Street (writtent with red "bloody" ink)

The red tower at the back is a luminous clock

In the underground quarry Ouache in Saint-Maximin. A red writing on the wall: Towards sites.

In the underground quarry Ouache in Saint-Maximin. A red writing on the wall: 1907, the cellar of the stars.

From the cathedral of Amiens, we can see a red tower. It is a chime that gives a bright full color.

Drawings in red chalk in the underground quarry Herblay.
- Junction of the south passage.
- Martha Street.

In the underground quarry Ouache in Saint-Maximin. A red writing on the wall: The basement of the sun.

The name of each geological layer is engraved on the steps of a staircase of exposure. Beside the name is the depth at which there is the geological layer.

- Topsoil
- Clay sandy red
- White Sand quartz
- Sand yellow quartz
- Gravel quartz