I personally think that if it is the shape of a ghost, it looks like he is ascending the stairs - and possibly there was formerly a handrail on the right hand side? It looks like there is a "hand" resting on it - yet it doesnt exist anymore
Like the Roman soldiers etc who are seen walking along with no feet, as the level of the road has been raised... etc
All good points you raise as well Lep, I also await the results of a second investigation eagerly
Ghosts are a slight vested interest of mine, as Derby is the "most haunted" city in the UK (possibly the world?)



