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Underground
from Wikipedia, the free encyclopedia
There is no article for this keyword; possibly "
underground
" is meant. The day here is the surface of the earth with daylight. In mining, “underground” means everything below the surface of the earth.
<img src="https://de.wikipedia.org//de.wikipedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" title="" width="1" height="1" style="border: none; position: absolute;">