One of the ponds of the quarry of Herblay. Lighted with a LED waterproof light.

Quarry of Herblay

Flooded corridors of the Giraud-Morel drain network.

A place to see, in this huge quarry of Mery sur Oise!

This place is called Quarrymen's footbath but it's particularity is to be the first geological drilling in Paris, in the oldest medieval quarry of Port-Mahon, close to the official Paris catacombs.

Quarry of Triel sur Seine

This quarry is as beautiful as dangerous. The oxygen level can be low as 13%. It's very low, be carefull.

According to various persistent rumors, the galeries network could be open to the public in the near future, and maybe offering the preservation it deserves.

Meanwhile, various underground openings are bringing the presence of taggers. The most paradoxical is that these openings are often carried out by lovers of heritage assets and they open to vandals every time.