CHAPTER IX. 



SILLIMAN'S AVENUE. — RHODA'S ARCADE. — LUCY'S DOME, AND 

 PASS OF EL GHOR. 



, Upon landing on the farther shores of Echo 

 River, we immediately enter Silliman's Avenue, 

 — so named for Professor B. Silliman, Jr., who 

 visited the Cave in 1850. 



This avenue is a mile and a half long, and 

 extends from Echo River to the Pass of El Ghor. 

 Its height varies from twenty to forty feet, and 

 it is from twenty to two hundred feet in width. 

 The walls and ceiling of this avenue are rugged 

 and water-worn. It is undoubtedly of recent 

 formation, as compared with other parts of the 

 Cave. 



The objects of interest in Silliman's Avenue 

 come in the following order : 



1. Cascade Hall is two hundred feet in diam- 

 eter, and twenty feet high. It receives its name 

 from a small cascade That falls into it from the 

 ceiling. 



Of this hall Bayard Taylor says, "A few 



C 103 ) 



