Smithsonian Report, 1931. — Douglass 



Plate 5 



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1. Kawai-u-ku, i;<-iii--ial view 192s; l)rul<i-!i down walls occupy the entile t.k.\ liiu . It mvei.-, ',i ams. 

 This was the first prehistoric ruin to be dated by tree-ring methods: numerous small pieces of wood 

 givinsr dates near 1168 were discovered above the rocks show-n at extreme left of this picture 



2. Pueblo Bonito, east end, looking south from the clills above. This fine [)art of the ruin, restored by 

 the National Geographic Society, was largely built between 1050 and 1075 A. D. 



Dated Ruins 



