Mines

This Luxembourg cave is covered in cryptic looking marks left by mining activity.

This Colorado hiking trail provides a small gold mine of abandoned gold mines.

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

This old Estonian mine has been kept like a sprawling time capsule of the local shale industry.

The remains of the furnace and iron works that produced the massive Hudson River Chain still stand in the woods of New York.

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

Unlike many reclaimed, abandoned mines, this Canadian cave system is still just a dangerous maze.

This former coal mine has been turned into a sprawling modern art complex.

Derelict buildings are all that remain of a complex at the site of one of the worst mining disasters in Montana history.

This crumbling Death Valley mining complex was known for its use of giant, 20-mule team wagons.

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

These Stalin-era industrial 'death traps' hang lifeless above the city

The aggressively banal name of this underground fortress of bureaucracy does little to evoke its truly surreal existence.

The scene of one of the darkest moments in American labor history has been left essentially untouched since the tragedy.