pit; mine shaft
Refers to a pit or shaft, especially in mining contexts. Often used as a suffix in compound words like 炭坑 (coal mine) or 廃坑 (abandoned mine).
Many old coal mines remain in that area.
Safety checks inside the mine are essential.
abandoned mine; disused mine · closure of a mine; closing down a mine
inclined shaft
miner
entering a mine; going into a pit
The kanji 坑 combines 土 (earth) and 亢 (high/throat), originally suggesting a hole or pit in the ground. The reading こう is the on'yomi.