ABC News investigates cases of dangerous sinkholes caused by abandoned mines.

Australia's coal mines are expanding as exports boom, awkward timing for a nation preparing to champion clean energy as lead negotiator for the UN's climate summit.Australia is president of ...

What began as a stack of fragile, century-old mine maps is being transformed into an immersive 3D window into the past by archaeologists, energy policy experts and data scientists at Michigan ...

HeavyDSparks takes a Black Hawk deep into Utah’s remote Uinta Mountains to investigate the legend of billions of dollars in lost Spanish gold. Guided by veteran treasure hunters, old maps and stories ...

A group of men enters an abandoned underground mine filled with old railway tracks, flooded tunnels and unstable rock ...

Dozens of people get injured or die in the U.S. every year because they don’t follow this simple advice: Stay out of abandoned and active mines and surrounding lands. Abandoned mines are not history ...

The investigation identified cases of people dying after falling into or being swallowed by the ground and homes and cars sinking. A hidden danger may be lying beneath communities across Illinois, ...