A building under demolition. There remains only the supporting structure.

One of the many leaflets Claustrophile long to read.

I feel lonely. Sitting on the edge of a puddle, waiting night after night came from an image, even furtive, which will warm my frozen heart. Boredom is deadly but I am perhaps more myself.
I do not control my movements. It seems I am doomed to remain motionless near the puddle. I can sit there, going to bed at the top in every sense, to slip under the surface. But I can not go away. Several weeks have passed already, maybe more. I lost track of time. I also lost touch and smell.

It all began one evening in July, right here. I rode north through here. I walked into the puddle and I did not immediately understood what was abnormal about it opposed the reaction to my muddy boots. In retracing my steps that I understood, without understanding anything beyond. The water that I had defiled was perfectly clear! I did another test, stirring the surface with my dirty soles. But water does not disturb and do not wash my boot. Worse, it penetrated the boot but no step had resulted. I started to jump in with both feet, there was no splash. I thought mad.
I think when I last had committed error in allowing my curiosity until that train was going to lose. I squatted and I plunged his hand into the water. I could see through transparency, I felt the cold touch and wet. But the water do not wobble. If I was raising in my palm and I let her run, she immediately incorporated the puddle remained perfectly motionless. I was scared.
But after a few minutes I emerged reflects a man who looked at me. I was scared to see it without having heard it, but it was nothing of the horror that awaited me next. Because when I turned around there was nobody behind me. This man existed only in reflection. And only in this puddle. I saw him once. It was already too late.
I was terrified. The stranger in the mirror and spoke agitated, as if trying to tell me something. But he remained silent to my ears. I panicked. I wanted to run but I was so scared I did not notice the sky of the quarry. I myself am hit with unprecedented violence. I think the shock was fatal.
Where I felt back up, I saw myself lying with his head in a puddle of blood flowing to the puddle of water. But when I looked at the puddle that is me that I could not see. I had no reflection.
The body was lying nearby was finally identified but it was not mine wearing my clothing and my backpack.
It was the man I saw in the reflection! He set off again in flesh and blood, for me, leaving me alone and trapped in my fate! I could not even follow him, as if the puddle of water had been magnetized. Since I am still waiting in the darkness, someone realizes that the puddle is still ...

Maybe you than I expected. You who picked up this pamphlet, a little better scans the surface of the water ...

The great dome of the Opera Garnier, home to several dance halls, each with its own piano. The most prestigious occupies the entire area under the green dome. The floor of the ballroom is inclined to replicate that of the theater. A sloping floor allows the public to see the choreography. For some shows, you need a flat surface. It then adds a platform.

Source: words collected from a former manager of the opera.

On the roof of the tallest building in the Renault factory on Ile Seguin. The latest model of car produced in this building was the Supercinq. Two huge cranes and many compressors are aligned on a hundred meters. Imagine that there is piping under there!

Reservoirs of the Plaine Saint-Denis (here, the smallest tank), located under the France stadium are one of the largest type of construction. It can hold up to 165.000m ³ of water. The irregular shape of the pillars is due to the construction technique by molding (digging the soil, concrete injection and clearing the land around the pillar).

The Church of St. Augustine (Paris) has been built under the direction of Victor Baltard between 1860 and 1871. The land for the building is small, so they used a metal structure for the building. The advantage of this kind of construction is the absence of flying buttresses. That was the first time a great building was built with a metal structure. The land also not having a rectangular shape, wich is why the church is trapezoidal, with a narrow face and a much larger chorus. It measures about 100m long and rises to 80m high.

A small ossuary under the cemetery of Kremlin Bicetre. The bones are piled into a former quarry. They are not numerous, suggesting that they come from concessions not renewed. It remains a part of the quarry particularly pretty, with
beautiful arm pillars.

First steps in quarry until his last run, each cataphile notes an improvement in his behavior in the undergrounds. The route passes through several phases where his attitude toward the place, other individuals and especially in relation to itself will evolve.

Step 1: The disease of quarries.

It starts with a proposed descent. Through a friend or media, the neophyte becomes aware of the existence of a city under the city. Torn between the desire for exoticism and fear of the unknown, he went to the rendez-vous. In front of a bar or in front a subway, a diverse group waiting for him. They have all worn and dirty uniforms, each carrying packs of beer in hand, the other monstrous sacks on their shoulders. During the walk to the quarry, the main game is to scare again, both by sadism but also to test it and avoid it falters once inside.

Because everyone knows the strange disease that threatens the neophyte: The disease of quarries. As one who fears seasick when he sets foot on a boat, the apprentice will distressed by the entrance of the cave. Only after twenty meters underground to think he tons of rocks that overlook and threaten. Add to that the narrowness of the galleries, the disorientation and the inability to find the exit in this hellish labyrinth and you get a malaise that will fade with the times. At the exit, greatly relieved to be whole, the beginner will be happy to have survived such an adventure. Most will never return and not deviate from the quarry. Some however will want to repeat the experience and come away with the attack of subterranean depths.

Step 2: Thirst discovery.

Finally, the long-awaited map is formally placed in the hands trembling with emotion of the beginners. The first explorations where the latter takes the responsibility for guiding difficult: The errors and half-turns are frequent. Few were self-taught in this area, learning to move in an underground quarry is not obvious. But the excitement of discovering a new world is huge: There are so many things to see that often runs beyond the required time. At this stage, the cataphile often integrates a group of friends who will evolve. This is the beginning for some the desire to be recognized by his peers.

A plaque engraved in underground quarries of Paris.

Railway extended Sceaux in Paris.
The consolidation of existing quarries in the way
railway was begun February 25, 1892
under the direction of Mr. O. KELLER
Chief Engineer of Mines Inspector General of Quarries.
by G. HUMBERT mining engineer
and completed on 1 May 1893

Vanne's reservoir. The consolidation of existing quarries in the location of these
Tanks was started September 7, 1868, under the direction of Mr. E. of Fourcy. Engineer
Chief Mining Inspector-General of careers by Mr A. Descos mining engineer: Interrupted
March 6, 1869, she was taken May 27, 1872 and completed January 31, 1874 under the direction
successive M M. JACQUOT DESCOTTES and chief mining engineers, inspectors general
Careers by Mr O. KELLER mining engineer. Mr. Trie and Mr. LAZIES contractors.