Criterion Collection Letter Never Sent (Blu-ray)(2012)

Groundbreaking Russian director Mikhail Kalatozov presents this striking tale─that's considered to be a socialist propaganda film─with the aid of stunning cinematography. Four Soviet geologists sent into the Siberian wild to locate and map a diamond mine deal with a harrowing journey when they must brave the harsh elements to get home after a forest fire severs their connection to civilization. Tatyana Samojlova, Yevgeni Urbansky, and Vasili Livanov star.