The Bois du Cazier was coal mine in Marcinelle, Charleroi. It was the scene of a mining disaster on 8 August 1956, when 263 men including 136 migrant Italian labourers lost their lives. The site today hosts a woodland park, memorial to the miners, the pit head, an industry museum and a glass museum. The museum is an Anchor point on the European Route of Industrial Heritage.
A concession to mine was given by royal decree on 30 September 1822. A transcription error caused the name of the site to be changed from Bois de Cazier. There were two shafts reaching 765 et 1035 mètres. A third shaft, 'Foraky', was being dug in 1956. At that time (1955), annual production was 170,557 tonnes for a total of 779 workers, many of whom were not Belgian but migrant workers principally from Italy. On the 8 August 1956, a fire destroyed the mine. Full production resumed the following year. The company was liquidated in January 1961, and the mine closed in December 1967.
There is a memorial wall to the disaster and a museum of mining and heavy industry. A workshop explains the art of metal forging. Around the two puits (shafts) the site has been landscaped- allowing views from the slag heaps over Charleroi.
Bois du Cazier is one of coal mines described as UNESCO World Heritage Site of Major Mining Sites of Wallonia.
References:The ancient Argos Theater was built in 320 BC. and is located in Argos, Greece against Larissa Hill. Nearby from this site is Agora, Roman Odeon, and the Baths of Argos. The theater is one of the largest architectural developments in Greece and was renovated in ca 120 AD.
The Hellenistic theater at Argos is cut into the hillside of the Larisa, with 90 steps up a steep incline, forming a narrow rectilinear cavea. Among the largest theaters in Greece, it held about 20,000 spectators and is divided by two landings into three horizontal sections. Staircases further divide the cavea into four cunei, corresponding to the tribes of Argos A high wall was erected to prevent unauthorized access into the theatron and may have helped the acoustics, but it is said the sound quality is still very good today.
Around 120 CE, both theaters were renovated in the Roman style.