Among migrations were those to cities in (or on the margins of) the great salt deserts, in particular to Yazd and Kerman, which remain centers of Iranian Zoroastrianism to this day. Yazd became the seat of the Iranian high priests during Mongol Il-Khanate rule, when the "best hope for survival a non-Muslim was to be inconspicuous." Crucial to the present-day survival of Zoroastrianism was a migration from the northeastern Iranian town of "Sanjan in south-western Khorasan", to Gujarat, in western India. The descendants of that group are today known as the "Parsis"—"as the Gujaratis, from long tradition, called anyone from Iran"—who today represent the larger of the two groups of Zoroastrians.