Two brave families face BBC Wales's toughest challenge yet as they embark on an epic journey back in time to experience life on the barren hillsides of 19th-century Snowdonia. The Braddock and Jones families say goodbye to the 21st century and take their first steps into 1890. But as they move into the cramped, basic cottages that will be their homes for the next month, they're soon grappling with the realities of not just a different era, but a different world.