/XCA.s' BRIDGE 



357 



cemented together b>- the deposits (A the nei,L,dibr,iirin:_( hot 

 springs. It appears as if the stream had scooped out a channel 

 on one side, leaving an overhanging ledge, which was met b}' 

 earth and stones falling down from the opposite clill. Certainly 



'^H 



F;RIDGE OF THE 1?.CAS L^l'ALI.ATA 



an oblique junction, as \vould hapjjcn in such a case, was ver\- 

 distinct cjn one side. The Bridge rjf the Incas is b\- no means 

 worth)- of the great monarchs whose name it bears. 



5 /A. — We had a long day's ride across the central ridge, 

 from the Incas Bridge to the Ojos del Agua, which arc situated 

 near the lowest casuiha on the Chilian .side, Thc>e casuchas 



