NO. 2 



SMITHSONIAN EXPLORATIONS, I924 



61 



Fig. 71. — A quarry from which the Incas obtained stones for the great fortress 



near Cuzco. 



Fig. ']2. — A portion of a wall in the great Inca fortress near Cuzco. The 

 stones are fitted with great exactness, but without mortar. A drainage opening 

 is shown in center. The corner stones are rounded and the wall slopes a little. 

 The Incas had no beasts of burden (the llama will carry 75 pounds, but will 

 not pull in harness) and no metal tools. Some of the large stones weigh 

 many tons. 



