An iceberg as big as the whole of London has broken off from a glacier in Antarctica.
The chunk of ice is the first major split from the Amery ice shelf since the 1960s and is reported to be two kilometres thick, covering 1,636 square kilometres.
Experts will track the berg to see if it is a danger to shipping, reports The Mirror.
Professor Helen Fricker, from the Scripps Institution of Oceanography, told BBC News: "I am excited to see this calving (splitting) event after all these years.
"We knew it would happen eventually, but just to keep us all on our toes, it is not exactly where we expected it to be."
She said the split is not linked to climate change.
The iceberg has been called D28 and is dwarfed by nearby A68, which broke off the Larsen C ice shelf in 2017 and is more than three times as big.
The one trillion tonne iceberg, measuring 5,800 square kilometres, is four times the size of London.
Ella Gilbert, a PhD Antarctic research student from London, previously filmed the formation on the very first science flight over it.
She said: "We saw the widening gap between Larsen C and the A68 iceberg as the berg slowly drifted away, creating smaller sized icebergs in the process.
"It’s the only science flight that’s ever been done since the A68 iceberg broke off."
In 2007, more than 150 passengers and crew were evacuated after the MS Explorer sank after striking an iceberg off the Antarctic peninsula.
