Brahui is often considered to be a remnant of a formerly more widespread Dravidian language family that was speculated to have reduced during the Indo-Aryan migration. It is also sometimes speculated that Brahui might be a direct legacy of the Indus Valley Civilisation. However, one polar opposite view is that Brahuis migrated up to Baluchistan in the 13 or 14th century or by a late immigration that took place after 1000 CE.