One unique feature of the Csíksomlyó pilgrimage is the overnight vigil. According to ancient beliefs, those who stay awake Pentecost Sunday can spot the Holy Spirit or the Blessed Lady shrouded in the rising sun. This belief is especially widespread among Csángó Hungarians.
The tradition is definitely a Christianized version of the old pagan belief as in ancient times the Sun God was the chief God that everyone worshiped, his consort the Blessed Lady of Csíksomlyó (metamorphosed into Virgin Mary) stands on the crescent moon (several ancient goddesses are associated with the moon including Isis, Ishtar, Artemis - consorts of the Sun God) on her head a crown of twelve stars (the ancient symbol of the Zodiac).
(Photos mno.hu – hungarianambiance.com)