What looks to be a large impact crater has been identified beneath the Greenland ice sheet. The 31km-wide depression came to light when scientists examined radar images of the island's bedrock.

In a study published Wednesday in the journal Science Advances, the team reports that there is indeed a crater, which was made by a half-mile-wide iron asteroid slamming into Greenland between ...

In 1831, somewhere on Earth's surface, a portal to the underworld appeared. A massive volcano opened wide its jaws and ...

Rain is becoming more frequent in Greenland and accelerating the melting of its ice, a new study has found. Scientists say they're "surprised" to discover rain falling even during the long Arctic ...

Location of Find Siberian coast, Sakha Republic Most people don't know that Greenland has a massive hole under it. Discovered in 2015 using advanced radar technology, the Hiawatha Crater ...

Map of the bedrock topography beneath the ice sheet and the ice-free land surrounding the Hiawatha impact crater. The structure is 31 km wide, with a prominent rim surrounding the structure.

Explores some of the most cavernous places on the planet, including an expansive Siberian crater with no explainable origin, Greenland's bizarre black holes, an ancient forbidden well in the ...