California firefighters find two dead bodies inside ‘human-dug cave’ surrounded by ‘white powder’ (Picture: CBS/KCAL)Two people were found dead inside a cave that was dug by humans in a neighborhood of Los Angeles, California.Firefighters ‘arrived to find two deceased persons inside of a human-dug cave/excavation’ shortly after 10.30am on Sunday, said the Los Angeles Fire Department.‘A white powder substance was observed inside,’ added the agency.H