TIL that the Great Pyramid was shiny like a glass 4,000 years ago.

http://www.hexapolis.com/2014/10/31/historians-concur-great-pyramid-glass-like-shiny-4000-years-ago/



Submitted March 27, 2015 at 11:29PM by Dattatreya87 http://www.reddit.com/r/todayilearned/comments/30ikj1/til_that_the_great_pyramid_was_shiny_like_a_glass/