This photograph, found in this billboard and several other places near the Ruwanweliseya in Anuradhapura, has a misleading description. It says the photograph was taken in 1800. It is common knowledge that the camera had not been invented in 1800.
One reference suggests that this picture was taken in "late 1800s or early 1900s". Perhaps the organizers who put up this photo misunderstood this. People who are ignorant of the fact that cameras were not invented by 1800, believe this to be true.