A quarry is a type of open-cast mining where rocks or minerals are extracted. The quarries are used to extract building materials such as decorative stones. Quarries are usually shallower than other types of opencast mines.
The visual impact of the quarry is usually great. In other cases, such as the Sierra quarry image of lamps near Rio Maior goes unnoticed, as yet is surrounded by mountains. The stone dust caused by extraction may be significant as well as soil erosion.
Sometimes the exploited granitic rock comes in large size balls, occurring on the massive surface. It is possible to obtain large blocks, the following sawdust to their commercialization.
Coquina quarry twenty meters below sea level (Conway, South Carolina).
The Wire Opera House in Curitiba (Brazil) is an example of reuse of a disused quarry.
Quarries in Soignies, Hainaut, Belgium. The quarries on level areas often have drainage problems. The coquina quarry in the right image is carved more than twenty meters below sea level.
Many quarries fill with water to become ponds or small lakes after abandonment for mining purposes. Others are turned into landfill. But there are cases where the place is replaced commercial or tourist use, as the Quarries of the Park in Curitiba, Paraná, home to a huge site for spectacles in the open (Pedreira Paulo Leminski) and a theater (the Opera Wire) or as in the luxury hotel being built on the outskirts of Shanghai, China