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

The sinkhole, estimated to be around 65 feet wide and 65 feet deep, opened up at an intersection in the Myeongil-dong ...

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

Incat, a Tasmanian company, is building what will be the world's biggest electric ferry and ... Skype to shut down forever after 14 years Giant sinkholes discovered containing untouched ancient ...

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.

Related: The Best State Parks In Alabama, According To A Local Huge sand dunes on the Cape Henlopen shoreline housed U.S. defenses to protect the country from the German navy during World War II and .

The unique geology of the region has created some of the largest sinkholes on Earth ... that have transformed the surface world. When a Chinese cave exploration team descended into a previously ...

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Officials in South Korea say a motorcyclist who fell into a cavernous sinkhole that opened on a Seoul street was found dead ...

Officials in South Korea say a motorcyclist who fell into a cavernous sinkhole that opened on a Seoul street was found dead after an overnight search.