THE MAMMOTH CAVE, To 
heathen mythology are reversed in the Mam- 
moth Cave. Here we pass the Bottomless Pit 
before reaching the River Styx,—instead of 
ferrying over the latter on our way to the 
former ! 
The “ Visitor” (whose work was published by 
Morton & Griswold, Louisville) remarks, “ He 
who could paint the infinite variety of creation 
can alone give an adequate idea of this marvel- 
ous region. As you pass along, you hear the 
roar of invisible waterfalls; and at the foot of 
the slope the River Styx lies before you, deep 
and black, overarched with rock. ‘The first 
glimpse of it brings to mind the descent of 
Ulysses into hell, 
‘Where the dark rock o’erhangs the infernal lake, 
And mingling streams eternal murmurs make.’ ” 
The River Styx is one hundred and _ fifty 
yards long, from fifteen to forty in width, and 
in depth varies from thirty to forty feet. It has 
a subterranean communication with other rivers 
of the Cave, and, when Green River rises to a 
considerable height, has an open communication | 
with all of them. 
The Natural Bridge spans the River Styx, 
and is about thirty feet above it. When the 
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