THEATR Mwldan Film Society presents The Deep (12A) on December 15 at 6pm.

This story of survival is bizarre, inexplicable, and true. One raw night in March 1984, a fishing trawler capsized off the coast of Iceland; six men went into the water and only one survived, by swimming for five hours in temperatures that would have killed the average human within 15 minutes.

The story gripped the imagination of a nation – how did the shy young hulk Gulli, alone in the vast, freezing dark, manage to survive his fearful ordeal?

Like a modern addition to the Icelandic Sagas, this tale of heroism is told with realism but also a poetry and rhythm. It’s moving, inspiring and resolutely mysterious.