Does anybody know why the two women in the photo are covered entirely in black veils? Is this some sort of tradition or funeral custom, or what is it about?
I know that black clothing is a symbol of mourning in Orthodox cultures, but I have never seen a mourner cover themselves up to this degree.
It's just a style of black veil, which was standard for widows until recently (Jackie Kennedy wore a shorter one at her husband's funeral). Orthodox churches are more strict about what women wear inside church, hence the queen wore a long and heavy dress under the veil.