A TOUR ROUND NORTH WALES. 



her roughed attire, where rocks, heath, 



mofs, and a few grafles, feemed almoft 



the only component parts of the picture. 



From hence I crofled the river Twrch, 



X the burrower, and was fhewn by the 

 guide a piece of land, of confiderable 

 extent, that was nearly covered with in- 

 numerable mafles of broken rocks, which 

 had been carried there in the fuminerof 

 1782, by what the Welfh call Daear- 



>( dor, a breaking of the earth. This is a 

 diflodgment of a vafl quantity of the 

 furface of the ground, and (as appears 

 to have been the cafe in the prefent in- 

 flance) fometimes of a confiderable tu- 

 mulus from the higheft mountains, 

 which feems to have been occafioned 

 by the burfting of clouds, wh'ofe vaft 

 contents being lodged in the hollows, 

 penetrate by degrees into the earth, 

 which, loofening the whole mafs, is 

 fwept down with the torrent, and gene- 

 rally 



