Photo by Hiram Bingham 



A \Vi.LL UU11.T STAIRWAY ; MACHU I'ICCHU 



Near the priest's house is the most carefully constructed stairway at Machu Picchu, 

 each one of whose steps was originally a single block of granite. This leads from the 

 Sacred Plaza up to the top of the Sacred Hill (see pages 472, 508, and 509). 



Chief Topographer Bumstead and As- 

 sistants Hardy and Little. 



A route map was completed along a 

 rarely used trail from Abancay. the capi- 

 tal of the department of Apurimac, across 

 the Apurimac Valley via Pasaje to 

 Lucma, this being the portion of the map 

 not comi)leted in 191 1. Mr. P)nmstead's 

 map is on a scale of i inch to the mile, 

 with a contour interval of 200 feet. It 

 covers apjiro.ximately 500 square miles. 

 Frequent latitude and azimuth observa- 

 tions were made all along the route, and 

 an occultation of a first-magnitude star 

 was observed in connection with time 

 sights on the moon and Jupiter imme- 

 diately afterwards (see page 388). 



The route covered by this map is about 

 100 miles in length and passes through 

 a great variety of very heavy mountain- 

 ous country. The elevations here range 

 from about 4,000 feet up to more than 

 19.000. The most imprrtant features 

 represented on this map are the glaciers 

 of that part of the Mlcabamba Cordillera 

 between Choquetira, Arma. and Lucma. 

 A large part of this country was under 

 glaciation at no very distant date, and 

 great pains were taken to bring out the 

 glacial forms. 



This map will be of great value in 

 giving proi)er understanding of the physi- 

 ography of the central Andes, and will 

 be published in connection with Profes- 



507 



