The negatives were recovered by the Ross Sea Heritage Restoration Project, which is conserving items from Captain Scott's hut. Conservators carefully separated the negatives, which had become fused together, then developed them to produce 100 year old pictures never seen before. The photos, which are damaged from their century-old ordeal, are from Ernest Shackleton's 1914-1917 Ross Sea Party. This party was stranded for awhile on Ross Island after its expedition ship, SY Aurora was torn from its moorings. Read more about it here and see the pictures here.
My contribution: restoring one of the photographs with Photoshop, just for fun.
Here is the original, taken from aboard the ship Aurora. The Photoshop restoration is below.