... the Pyramid of Khafre, which, as you can see, still has its smooth limestone finish up at the top.

All of these pyramids were finished with smooth limestone, giving them a polished, sun-catching look from a distance. Unfortunately, most of the limestone was carried off to build other things at a later date. The Pyramids of Khufu and Menkaure have been completely stripped of their finish, and Khafre's only has that little bit up at the top.

This is just another poignant reminder that nothing lasts forever, and even if it does it's unlikely to remain in the same, pristine condition. I suppose we should just be grateful that no one's tagged the side with "TRUST JESUS" yet, and leave it at that.