﻿-„ 
  ,; 
  

  

  Plate 
  81. 
  — 
  Machu 
  Picchu 
  stone 
  masonry 
  and 
  architecture. 
  Top 
  (right): 
  Mono- 
  

   lithic 
  carving 
  combined 
  with 
  ashlar 
  masonry. 
  (Courtesy 
  Truman 
  Bailey.) 
  

  

  