Balochistan (Balochi: بلوچستان) or Baluchistan (lit. Land of the Baloch) is an arid, mountainous region on the Iranian plateau in South Asia: it includes part of western Pakistan, south-eastern Iran and south-western Afghanistan. The area is named after the numerous Baloch tribes. The majority of the ethnic Baloch speak Balochi, while some use Brahui as their second language. The small Pashtun population residing in Northeastern Balochistan speak Pashto. The southern part of Balochistan, where Baloch and Balochi originated, is known as Makran.