A motorcyclist was found dead Tuesday around 18 hours after he vanished into a massive sinkhole that opened up in Seoul, ...

There is a cave in the world which has its own ecosystem. This cave has a forest, river, rocks, trenches and much more. It ...

Reporter Monica Charsley embarked on a 24-hour adventure to Mount Gambier during her trip to South Australia. The forgotten city is a must-see for thrillseekers, nature enthusiasts and historians ...

This sinkhole, thought to be the largest in the world, measures around 537 meters (1,762 feet) wide and 662 meters (2,172 feet) deep.

The South is home to some of the country's best state parks that offer stunning scenery and all kinds of recreation. If ...

The unique geology of the region has created some of the largest sinkholes on Earth, with China home to over 200 known tiankeng. Scientists continue to uncover new ones, with one of the latest major ...

There are a number of ways these depressions in the ground can form, but some sinkholes can grow so big they can take whole vehicles ... away softer rocks and other materials that can cause the earth ...

There's another big hole in the ground ... have continued to wash away softer rocks and other materials that can cause the earth to suddenly cave in. Some may associate sinkholes with places in the ...

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The man was riding his motorbike along the Gangdong district of the South Korean capital when tragedy struck above a subway ...