Each dawn, sheep farmer Thomas Carrick works the land through freezing winter rain and snow, 2,000 feet up in the bleak Cumbrian fells.
Like many British farmers, he is about to find out if life outside the EU is even colder and darker.
Well used to weather dependent good and bad years, sheep farming is facing a possible man-made disaster when dawn breaks on the New Year in post-Brexit Britain.
More than a third of British sheep meat is exported, and 96% of it goes to the EU, according to industry figures.
With a no-deal Brexit on January 1, British lamb would face tariffs of 48%, making it prohibitively expensive to customers in Europe.