By Jessica Salter
3:24PM GMT 20 Feb 2009
Scientists have captured dramatic footage of massive lakes in the Arctic melting away in a matter of hours.
Glaciologist Jason Box has been testing a Moulin, a shaft that allows water to travel from the glacier’s surface to its bottom, in a glacier on the Greenland ice cap to find out how fast it is melting.
Dr Box said: “The Moulin is the epicentre of our concern because all the water is running down at this one point.
“It’s just bottomless, no light escapes.”
Balanced on the edge of an ice sheet the team used a flow meter to measure the water speed.
He said: “There’s no escape from a Moulin. It’s just got danger written all over it. But the information is so important that we actually had to take that risk.”