^04 INCIDENTS OF TRAVEL. 



posite each other, and at the height of twenty feet 

 from the ground, are two massive stone rings, four 

 feet in diameter, and one foot one inch thick ; the 

 diameter of the hole is one foot seven inches. On 

 the rim and border were two sculptured entwined 

 serpents, one of which is represented in the engra- 

 ving below. 



These walls, at the first glance, we considered 

 identical in their uses and purposes with the parallel 

 structures supporting the rings at Uxmal, of which 

 I have already expressed the opinion that they were 

 intended for the celebration of some public games. 

 I have in all cases adopted the names of buildings 

 which I found assigned to them on the spot, where 



