And here's a pit.
I've posted a granite mine before; this time two basalt mines. #Lubań, #LowerSilesia, Poland.
https://www.openstreetmap.org/?mlat=51.10134&mlon=15.26524#map=14/51.10134/15.26524
https://www.openstreetmap.org/?mlat=51.07835&mlon=15.25212#map=13/51.07835/15.25212