Why does the top,of the pyramid of giza look smooth ?
- -Lv 66 months ago
The bottom has been eroded not by weather, but by people stealing stones. The main body of the pyramid is sandstone, but the smooth facing work is limestone. Much of that limestone has been robbed away over time- only the top bit that was too hard to get to is left.
- NancyLv 66 months ago
Two contributing reasons: one, the top used to be clad in polished gold, the sun reflecting off it and appearing as the Eye of Ra, Ra being the Ancient Egyptian sun god, so the top was protected from erosion from the wind blowing sand into it for a very long time; two, because of the weight of sand, the higher you go. the less sand gets blown up by the wind to strike the face of the pyramid, which has led to the bottom getting essentially sandblasted by the wind much more than the top, so there is more erosion on the bottom than the top for that reason, too.