Okay, I spotted this one, and due to all the talk about hiding behind pyramids at the technodrome forums, I just had to put it up. Now all I need is one about mangos... This one is by Louise Townsend Nicholl, from the anthology The Blood that is Language, published by The John Day Company, New York.
Back to poetryPyramid
Now throw off the wieght of a thousand bodies,
The monument, the ghostly pyramid
With myriad rooms to heard and house remembrance,
A builded riddle borne so long above you
The tomb became your own,
Enthroning death upon the delicate tissue,
The tautened sinew, of the buried self.
Now throw the weight off a thousand bodies
And beg the air for breath.