_ . C 255 1 
defcent, owing to my weight drawing the rope into 
clefts, betwixt the fragments of the rock, which 
made it ftick; ^and to my body jarring againft the 
fides, wdiich I could not poffibly prevent w''ith my 
hands. Another circumfiiance alfo increahd the 
danger, W'hich was, the rope looiening the flones over 
my 'head, whofe fall I every inftant dreaded. As L 
was obliged to keep my face towards the hdc on 
which I was let down, I could not make any very 
particular obfervations on either of the rocks on each 
tide of me, nor any whatfoever on the oppolite one,, 
except at a few refling places, either in my defcent 
or afcent. 
For the fake of conveying a clearer idea of the 
defcription, I have added two or three drawings, and 
a plan 3 which are as exaft a refemblance of the place, 
as my recollection will enable me to give. 
And, before I conclude, I ought to mention, that 
under the projection of the rock at A (fig. I.) where 
the pafiage firfl grows narrow, and which may with 
difficulty be feen from the top, is the entrance of a 
cavern, that feems to go a great way ; but I could 
‘not get into it, and therefore am not able to fay any 
thing further about it. 
P. S. Since wTiting the above, I have been inform- 
ed, that a gentleman, who lives near the fpot, affirms, 
there was formerly the mouth of a fecond ffiaft in 
the flpor of the great cavern, fomewliere under the 
great heap of flonesj and that it was covered up by 
the miners, at the time when fo many loads were 
thrown in from the top. It is reported to have gone 
dow’n a vaft depth further, and to have had water at 
