tunnel; (mining) gallery; level; shaft; pit
abandoned mine; disused mine
coal mine; (coal) pit; colliery; coal-mine shaft
within a pit or (mine) shaft
shaft (e.g. in a mine); pit
shaft (e.g. in a mine); pit
shaft (e.g. in a mine); pit
entrance into drift or pit
shaft (e.g. in a mine); pit
burning books on the Chinese classics and burying Confucian scholars alive
burying Confucian scholars alive
shaft (e.g. in a mine); pit
winze (mining); well (oil, gas)