The discovery of geometric microliths at Horton Plains, located on the southern plateau of the central highlands of Sri Lanka, suggests that the area was visited by prehistoric humans from the Mesolithic period.
Penemuan mikrolit geometris di Horton Plains, yang terletak pada bagian tengah-selatan dataran tinggi Sri Lanka, menunjukkan bahwa, daerah tersebut telah dikunjungi oleh manusia prasejarah pada zaman Mesolitikum.