The lake has grown since then at varying rates increasing fourfold since the 1970s.
It recently became the deepest lake in Iceland at over 248 meters depth as glacial retreat extended its boundaries.
With temperatures rising between 1920 and 1965, changes started occurring in the Breiamerkurjokull glacier tongue.
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The lagoon is the lowest point in Iceland with land at 200 metres below sea level.
In summer, they melt and roll down the channel into the sea.
In winter the lagoon freezes and locks the icebergs in place.
Some icebergs appear naturally sculpted on account volcanic ashes from ancient eruptions that partly cover them.
