Letter Never Sent (1960)

The great Soviet director Mikhail Kalatozov (The Cranes Are Flying), known for his virtuosic, emotionally gripping films, perhaps never directed one more visually astonishing than 'Letter Never Sent'. This absorbing tale of exploration and survival concerns four members of a geological expedition who are stranded in the bleak and unforgiving Siberian wilderness while on a mission to find diamonds. Luxuriating in wide-angle beauty and featuring one daring shot after another (the brilliant cinematography is by Kalatozov's frequent collaborator Sergei Urusevsky), 'Letter Never Sent' is a fascinating piece of cinematic history and a universal adventure of the highest order.