What it is, what to hear first, and what sits next to it.
South Asia is the southern region of the Asian continent, which comprises the sub-Himalayan countries and, for some authorities, also includes the adjoining countries to the west and the east. Topographically, it is dominated by the Indian Plate, which rises above sea level as the Indian subcontinent south of the Himalayas and the Hindu Kush. South Asia is surrounded (clockwise, from west) by Western Asia, Central Asia, Eastern Asia, Southeastern Asia and the Indian Ocean. .