Scientists have known that a two-kilometre (1.2mile) wide meteorite crashed into Earth nearly 800,000 years ago, but the exact spot of where it landed has been a mystery for decades.
However, there is now strong evidence to show the crater may lie beneath lava in a 910-cubic-kilometre area of a volcanic field in Laos, southeast Asia, according to a new research paper.
The hidden impact crater is thought to be about 13 kilometres (8 miles) wide and 17 kilometres (10.5 miles) long, based off the research team’s calculations.
Researchers were led to the impact site by a set of small black glassy objects called tektites, which scientists believe were formed from Earth material that melted from the meteorite’s impact.
Tektites ranging from 750,000 to 35.5 million years old have been discovered across the planet in areas known as strewn fields, which can be found on every continent except Antarctica.
Professor Kerry Sieh, principal investigator for the Earth Observatory of Singapore who worked as one of the paper’s authors, told CNN that the existence of the objects meant the meteorite was “so large and its velocity so fast that it was able to melt the rocks that it hit”.
Although scientists have been able to determine most of the source craters for tektites, the Australasian field that extends from southern China to south Australia was a mystery.
Mr Sieh and his team believe their research has identified “the best candidate yet” for the Australasian strewn field, which is the largest known tektite field and covers about 10 per cent of the Earth’s surface.
The paper author said there had been many attempts to find the impact site, with suggestions ranging from northern Cambodia to central Laos and southern China.
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