Keeping Zoroastrianism alive after 3,000 years
18 August 2013 Last updated at 04:54 BST
Followers of one of the world's oldest religions have been celebrating their holiest day of the year, with a nervous eye on their dwindling numbers.
Zoroastrianism was founded around 3,000 years ago in Persia - now known as Iran.
But from a population of millions, the church now has around 200,000 members.
Robert Pigott reports.