SMITHSONIAN EXPLORATIONS, ig2/ 



145 



Fig. 172. — Loose stones were rolled to one side, forming this prehistoric 

 " road " in Chaco Canyon. On the skyline, above the Indian, appear the 

 ruins of New and Old Alto. (Photograph by Neil M. Jiidd. Courtesy of 

 the National Geographic Society.) 



Fig. 173. — This yellow pine, felled during the winter of 1926-7, was the 

 last of its kind visible from Pueblo Bonito. Tents of the National Geo- 

 graphic camp show in the middle left distance. ( Photograph by Neil M. 

 Tudd. Courtesy of the National Geographic Society.) 



