> Why would the pyramid casing be stripped (much
> more difficult task) and readily available stones
> be left intact on a mastaba? Doesn't make sense.
Because the mastabas were buried.
Alternately, the pyramid stones are exposed and ready for plucking. And it's easy to do: pry bar and gravity.
These were plundered much more recently (last millennium).
Edited 1 time(s). Last edit at 13-Feb-16 18:46 by R Avry Wilson.