The limestone quarry of Chanaz has been converted into mushroom farm once the site abandoned. Here is a mushroom farm, cultures arranged in line. The staircase leads to the upper level of the quarry.

The quarry is a huge scree. It is difficult to walk inside.

The lowest point of the quarry is slightly flooded as often.

Quarry of Bougival

Quarry of Bougival

The cement stone is extracted along the geological layer. It is inclined as the stone quarry is located within an uprising syncline.

A view down to the lower level of the limestone quarry Chanaz.

The limestone quarry of Chanaz is a smaller operating on three levels. The ceiling height is between 5 and 10m. Sometimes, holes in the floor let you see underground levels.

The network size is almost 4km developed. It was exploited from 1860 to the end of the Second World War to make cement. Portions was reused as mushroom farm thereafter (row crops and cultures in bags).

In this photo taken at the highest level, we see the intermediate level, row crop bottom right and even two holes overlooking the lower level. This is the most impressive part of the network with large volumes!

Old photograph of the underground quarry of Saint-Paul-Trois-Chateau. The stone blocks are mounted on carriages, ready to be lowered to the bottom of the hill for shipping.

Old photograph of the quarries cable. The stone blocks were shipped down the hill with a kind of funicular.