The article mentions that current law that applies to land in Scotland is an act from 1976 revised in 2012. Not sure which one of the original or revised preven

The article mentions that current law that applies to land in Scotland is an act from 1976 revised in 2012. Not sure which one of the original or revised prevents the selling of "souvenir plots" but it might indicate that it was not forbidden before 1976/2012 so practice may come from before when it was legal to do so.