A number of scholars have tried to decipher the symbols since 1878, and currently there is no consensus as to whether they constitute un-deciphered writing or graffiti or symbols without any syllabic or alphabetic meaning.
B. Lal found that 89% of the surveyed megalithic symbols had their counterparts amongst the Indus script.
He concluded that there was a commonness of culture between the Indus Valley Civilisation and the later megalithic period.
[1] In 2019, archaeologists in Tamil Nadu excavated further potsherds at Keeladi with graffiti closely resembling symbols of the Indus script.
[3] Scholars such as Iravatham Mahadevan have tried to link the symbols directly to Indus Valley script or as derived due to lingering influence,[4] whereas others such as K. Rajan see the symbols as the genesis of the later Brahmi script.