some tamil writers also claimed that the indo-aryans were also descendants of proto-dravidians of kumari kandam. according to this theory, these indo-aryans belonged to a branch which migrated to central asia and then returned to india. similar explanations were used to reconcile the popular theory that proto-dravidians migrated to india from the mediterranean region. a 1975 government of tamil nadu college text book stated that the dravidians of kumari kandam had migrated to the mediterranean region after the submergence of their continent; later, they migrated back to india via the himalayan passes.