Searchers are scouring a remote Alaska glacier for the remains of passengers who died in 1952 when a C-124 military transport plane crashed near Anchorage.
Since the wreckage was spotted in 2012, 17 bodies have so far been recovered. Search teams have now resumed their painstaking hunt for the 35 men still missing.
The wreckage of the aircraft, nicknamed 'Old Shaky' was rediscovered in 2012 - 60 years after it smashed into Knik Glacier on its way to a base in Anchorage. It eventually became part of the glacier at the bottom of Mount Gannett.
Now scientists and volunteers have returned to see if the ice in southern Alaska has melted and given up any more of its dead before they are lost to history.
Bryan Keese with the Alaska Army National Guard said: "We were on a training mission when my crew chief saw something on the glacier that looked like yellow fabric. It turned out to be a life raft."
The raft was carried by the ice more than a dozen miles from the crash site to an area near Lake George. Recovery teams are now working to locate all the remains before they are swept into the lake and lost forever.
The search area, which covers about three acres, is now near the toe of the glacier, and the leading edge is constantly being cleaved off and pushed into the lake.
US Navy Lieutenant Commander Paul Cocker said: "It's a patriotic duty that we're doing up here to the family members of the service members that have paid the ultimate sacrifice for their nation."
The families of the remaining 35 victims now wait for word from this silent flow of ice, reports the Daily Mail.