We stayed in Edinburgh years ago with a relative of my wife's, who is a amateur local historian.
On the way to visit Stevenson's home village, she stopped off at a churchyard containing a 'mortsafe' - a big metal box which was dropped over the newly-dug graves to protect them from the attention of 'The Burkers'
That was certainly 'atmospheric' particularly at the time we were there, just as the sun was going down.
'The burkers' were a favourite subject of many Scots Travellers tales - many of them still feared being dug up after thy had died.
Oddly enough, we recorded som information about them from Irish Travellers, though I am not aware that the practice of grave-robbing was a major problem in Ireland.
Jim Carroll