If you liked that, you're going to love this:
[tatjana.ingold.ch] See the numbers on the top, and go to #8. You can translate the German at the bottom, but I believe it's saying they are in the Abusir ruin field at a Dynasty 5 monument that clearly used a very unique type of stone. Notice the large chip out of the upper right-hand corner shows light stone to a depth of several cm., proving it's not a surface treatment. This is from a poster here on a Gigal topic, showing a Von Daniken(yes, Erich) family outing to Egypt some years back. Of course, it's an exploratory outing!