Mason's marks in Kharosthi have been found on several elements of the Bharhut remains, indicating that some of the builders at least came from the north, particularly from Gandhara where the Kharoshti script was in use. Cunningham explained that the Kharosthi letters were found on the balustrades between the architraves of the gateway, but none on the railings which all had Indian markings, summarizing that the gateways, which are artistically more refined, must have been made by artists from the North, whereas the railings were made by local artists.