The hole takes up two-thirds of the area of Manhattan and is nearly 300 meters high: The Thwaites glacier in Western Antarctica, researchers at the American space Agency Nasa have found a huge cavity.
"He explained: "[The size of] a cavity under a glacier plays an important role in melting. Scientists expected to find some relatively small gaps between the glacier and bedrock, but were unsettled by the 1,000-foot deep cavity the mission revealed.
"The size and explosive growth rate of the newfound hole, however, surprised them", they said.
'As more heat and water get under the glacier, it melts faster'. None of these are doing well, but one of them-the Thwaites Glacier in West Antarctica-is rapidly crumbling.
The void was found by ice-penetrating radar and a series of satellites, all of which are attempting to understand what's happening to Antarctica as the world warms.
The icy monster "backstops neighbouring glaciers that would raise sea levels an additional 8 feet (2.4 metres) if all the ice were lost", Nasa warned.
Thwaites has been described as one of the world's most unsafe glaciers because its demise could lead to rapid changes in global sea levels.
"The findings highlight the need for detailed observations of Antarctic glaciers' undersides in calculating how fast global sea levels will rise in response to climate change", according to the study by NASA's Jet Propulsion Laboratory. This summer, the U.S. National Science Foundation and the British Natural Environmental Research Council are launching the International Thwaites Glacier Collaboration, a five-year field project that aims to get to the bottom of the glacier's processes and features. Scientists have long thought that the glacier was not attached firmly to the bedrock beneath it.
The agency's Jet Propulsion Laboratory used ice-penetrating radar to explore the area beneath the Thwaites Glacier in West Antarctica, often called "one of the world's most risky glaciers" because its melting could significantly contribute to sea level rise.
However, there's been more retreat than advancement as of late.
Nasa has made a series of shocking discoveries about the state of the glacier. This data also shed some light on another concern about the glacier's grounding line, the point at which the glacier starts to depart from land and float on the sea.
The glacier is developed on different sides in different ways.
The study was published Wednesday in the peer-reviewed journal Science Advances.