Originally posted by sir_chancealot
The graffiti was in chalk, and they are "saddened" by it?
OMFG. 25 seconds with a rag and a glass of water and the "graffiti" is gone.
Not simple.
The sandstone that the temples at Abu Simbel are carved out of is highly porous - like a sponge - and the application of any kind of fluid - the
rubbing would leave a dirty mark.
Calcium Carbonate (chalk) is virtually insoluble in water, and any kind of even mildy acidic fluid would be out of the question because it would
dissolve deep in to the surface of the sandstone, including any minerals giving the stone its color.
Colored chalk would complicate the restoration even more.
Yes - an expert will have to be called to assess the damage and plan a restoration.
[edit on 8-1-2009 by undermind]