180 



BOULDER STONES. 



" On now, opposite the Cairn of Murkle, is a green 

 mound on the left hand, where lies a large boulder of 

 Portskerra conglomerate. It is about a hundred feet 

 above the sea-level. There is another of the same stuff 

 on the shore at Cleardane. At East Murkle there lies 

 one of the largest boulder stones I have seen in Caithness. 

 Twenty years ago it lay there amid heather and long 





CASTLEHILL HOUSE. 



grass. The field is ploughed now, and we have stubble 

 instead of heath, but the stone is the same. It lies 

 about 300 feet above sea-mark, and when the ice and 

 the flood brought it there, very little of Dunnet Head 

 was dry. 



" The village of Castletown stands on the boulder clay, 

 and there is blue boulder clay in the bottom of the bay 

 beyond. It can be seen right off Castlehill harbour. . . 

 At the south-west angle of Dunnet Sands, beside the 



