Huge blocks of ice calved off and collapsed into tidal waves of icy slush.

BBC: Patagonia��s ice-carved waterways

Satellite images have revealed that three massive icebergs have been calved from the Ronne Ice Shelf in the Weddell Sea on the Antarctic coast.

BBC: Three giant bergs calved in Antarctic

It is known to have calved from the Ronne Ice Shelf sometime during the afternoon or evening of 4 May as satellite imagery indicates that the ice shelf was still intact on that morning.

BBC: Three giant bergs calved in Antarctic