In the underground quarry Ouache in Saint-Maximin. Mushroom cultivation.

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

A well in the underground quarry Ouache in Saint-Maximin.

A cargo handling in the quarry Mello.

In the highest corridors of the underground quarry Mello. Almost 20m ceiling.

The huge entrances to the underground quarry Mello.

The quarry Montesson was used (as often) for the cultivation of mushrooms. The quarry belongs to the set of quarries of the plain of Montesson.

A abandonned mushrooms culture, with bags, in the quarry of Montesson.

Photography in relief. Thank you to Argonaut for the second camera.

The most far-reaching element of the career. In truth, the room seem even larger. Very impressive!

The underground quarry Port Mahon is one of the oldest quarries of Paris. Its use dates back to the 15th century. It has been classified historical monuments January 4, 1994.

The plaque in the wall gave its name to the quarry: path of Port Mahon.