The Cordillera Occidental is relatively low and is the least populated of the three cordilleras. The Igorots are indigenous people from the Cordilleras. He fluently spoke Kankana-ey, a language spoken in the Cordilleras. There are nine main ethnolinguistic groups in the Cordilleras. A few Ilocanos living in the Cordilleras have some Cordillerano blood. Other rice terraces outside the Cordilleras can also be found. The river then runs east of north in a great valley between the two cordilleras. The ecoregion contains snow-capped peaks, glacial lakes, and several rivers that originate in the Cordilleras. The Constitution of the Philippines allows for two autonomous regions&colon; the Cordilleras and Muslim Mindanao. The pairing of male with female is a fundamental feature of Cordilleras ancestral art. Ilocano is used in public schools mostly in the Ilocos region and the Cordilleras. The Baguio-based Saint Louis University is viewed as an "LGBT-friendly" university in the Cordilleras. In the south, the cordilleras are not well defined. The Caraballos ("Caraballo de Baler") start where the Sierra Madre and the Cordilleras meet.