Geologists have uncovered the world's largest underground thermal lake in southern Albania. Fed by hot springs, this ...

Deep beneath the Dutch city lie vast subterranean spaces that have served as art canvases, air raid shelters and a strategic ...

Neiswonger intends to expand the existing surface mine pits and construct entries for underground mining by room-and-pillar method to access the limestone. Estimates are that it will take 30 to 35 ...

Elon Musk drew attention to a decades-old converted underground limestone mine in Pennsylvania his Department of Government Efficiency (DOGE) team stumbled upon that is still being used to process ...

Several years ago, a team of Czech speleologists discovered a massive underground system of hot ... the high column of steam coming out of the limestone massif, we managed to find an abyss over ...

Federal employee retirements are processed using paper, by hand, in an old limestone mine in Pennsylvania. 700+ mine workers operate 230 feet underground to process ~10,000 applications per month, ...

These records are stored and handled in an underground limestone mine in Boyers, Pennsylvania. Elon Musk called the system a "time warp" while defending government workforce cuts at the White House.