COLUMBIAN HISTORICAL EXPOSITION AT MADRID. 



133 



with about 22 well-defined rooms, and traces of others. Some of the walls are 

 adobe and are very thin. The upper portion of the cliff is situated in anatural 

 cavity in the rock, measuring about 94 feet in length and 40 feet in depth. It 

 consists of 13 rooms and is built out even with the edge. One of the rooms is 

 supported by a well made buttress, a feature rare among these ruins. Traces of 

 walls which once extended three stories up from the ground, almost to the floor 



Fig. 58. 



SPADE-LIKE IMPLEMENTS. 



%, greenstone, Kentucky ; 97, Arkansas ; 93, South Carolina. 



of the upper cavern, can still be seen on the cliff face, and access to the upper 

 portion was had, doubtless, by means of terraced roofs of this part. The over 

 hanging cliff extends upward for nearly a thousand feet above the ruin. The 

 principal room in the upper portion is two stories high and has been coated with 

 a wash of white clay trimmed with yellow; hence the name of Casa Blauca. 

 Scale, 1 inch to 5 feet, 1 : 60. Area represented, 150 feet high, 210 wide. 



