﻿NO. 7 SMITHSONIAN EXPLORATIONS, I926 163 



Each successive period of constructional activity at Pueblo Bonito 

 witnessed a marked intramural rearrangement of dwellings and a 

 distinct effort to strengthen the outer walls, thus increasing their im- 

 pregnability. External doorways were eliminated ; ventilators were 

 closed ; the people drew closer and closer together. The single pas- 

 sageway which gave ready access to the inner courts was barred by a 

 wall through which a narrow door opened ; but this door was subse- 

 quently closed and thereafter entrance was had only by means of 

 ladders which could, in time of attack, be drawn up to the housetops. 



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Fig. 163. — The overliang above the Indian's head shows the union of a new 

 addition with older, partially razed walls in Pueblo Bonito. (Photooraph by 

 Neil i\l. Judd. Courtesy of the National Geographic Society.) 



Sporadic warfare is even more vividly evidenced by discoveries made 

 in individual rooms of the ruin. 



Among other researches pursued by the 1926 expedition was that 

 concerned with sub-court walls in Pueblo Bonito. Its closely-grouped 

 houses were not hastily constructed from previously prepared plans. 

 Throughout a considerable portion of the village deeply buried walls 

 have been found. These pertain in each case to earlier periods of 

 occupancy ; they represent dwellings partially razed and over-built 

 by later structures. Some of these demolished walls have been found 

 as much as 12 feet (3.65 m.) below the last utilized court level. So 

 great an accumulation of blown sand, debris of reconstruction and 



