I 
tt may feem ftrange and hard to believe, that there 
fliould be fuch Subterraneous Lakes and Channels as wc 
here luppofe ; but bolides that without them it would be 
impolTible to account for all thefe feveral EfFeds, which 
are mofl: true, and which I my felf have obferved ; there is 
a moft Notabk Inftance of the like things, found in the 
Subterranean Cavern called, The Grotto. Podpetfchioy which 
is r^prefented in Fig. III. ^ " 
^ : This Grom is iii Carmola in the Parifh of Gmtenffell, 
diftant foiir G<fr;5^^/^^^M^ fr^^m the City Ldac. /lis a 
Hole or entrance into the Rocky Mountain ; ^ is a great 
\ Cavern in the Mountain, capable- to hold above a hundred 
Horlenien ; /, k is a Channel bigg enough for a Man to 
pafs by/ a^ifar as theLa-ke^?, out of wfiich Lake the In- 
habitants hereabouts draw aH their Water, (having none 
nearer) and fetch it with lighted Torcbesw Imo this 
Lake o the Water runs with a great ftream by the Chan- 
nel/. And out of this Lake it fall- down a Precipice into i 
great Cavtoi^/ W ifcli:>fo much noife that the difcharge of a 
Fiflol^ would not be heard h^^^ -There is likewifeano- 
ther Gliannel m which tends upwards obfiquety, and 
leads to the great Lake whoffi length and breadth are 
hitherto undifcovered ; I lookt abdut it with many lights, 
and could fee nothing but Water, and throwmg Stones 
leveraUvayS'asferasl could, I heard themall fall ia the 
Water : and Ifound the depth 6fitnear the\fenktobe lo 
Cubirs , and doubt not but it is mudi deeper in the 
• middle. 
The Country People told me, tbatthis Channel /affordis 
always an equaf qmntity of Water, or elfe is q-uite dry ; 
and that fbmtimes rt will eeafe tarun in a Moment, and 
continue dry for feme Weeks, and then orfa fuddain it 
will run again with great force, fb as the Noife thereof 
frequently frights the Feopfe-as they come for Water. 
Out of the' Cave b there is afiotlier Ghamiblr, which is 
divided into three others d^e^f. This Chsiiiriil/ tends 
obliquely 
