ElÃ as PiÃ a has DajabÃ n to the northwest , Santiago RodrÃ guez to the northeast , San Juan to the east by San Juan and the Independencia province to the south . To the west ElÃ as PiÃ a borders the Republic of Haiti . The ElÃ as PiÃ a province has the DajabÃ n and Santiago RodrÃ guez provinces to the north , the San Juan province to the east , the Independencia province to the south and the Republic of Haiti to the west .