Thonigala Rock Inscriptions (Sinhala; Sinhalese: තෝනිගල සෙල් ලිපිය) are two Elu-language inscriptions engraved on a rock situated in Anamaduwa of Sri Lanka, written in Brahmi alphabet. Each inscription is about 100 feet long and each letter is about one feet in height and engraved about one inch deep in to the rock.[1] Also it is said to be the largest rock inscription found in Sri Lanka.
Thonigala rock inscriptions are dated back to the first century BC to the period of King Mahaculi Mahathissa (76-62 BC), who was a son of King Walagamba.[2] [3] The inscriptions reveal details about a grant of a lake and village to a Buddhist Monastery named Achagirika Tissa Pabbata. Today this Monastery is believed to be the Paramakanda Raja Maha Vihara, which is located about 50NaN0 from Thonigala.