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 tiny cottages that will be their homes for the next month, they soon realise that this will not be 'pretend living'.