evidence: Pahiyangala, the largest cave in Asia, is situated at Bulathsinhala in the Kalutara District. It is a two hour drive from Colombo through the Piliyandala-Horana Road and covers a distance of about 40 Km. The road is motorable up to the foot of the rock. Pahiyangala gets its name from the famous Chinese traveller monk, Fa Hein who came to this country in the 4th century A. D. in search of Buddhist scriptures. He is said to have stayed in this cave whilst on his way to Sri Pada (Adam's Peak). [...] Pahiyangala is a place which should be visited by the nature lovers as well as the students of history alike.