EXCURSION VI. 



123 



Arran the irruption of a liqiiid stream of lava into the 

 crevices of a fissured mass. 



The Fallen Rocks are about two miles from Sannox; 

 they are an immense debacle of Old Red blocks, hurled from 

 a high far-up cliff; and now strewing the beach and steep 



Fig. 22. 

 The Fallen Rocks. 



slope in magnificent confusion (fig. 22). They seem freshly 

 fallen; yet Headrick described them sixty years ago as we see 

 them now. 



61. At Groggan Point, immediately west of the Fallen 

 Rocks, we come on the lower beds of the carboniferous 

 series following conformably on the old red sandstone. They 

 are very similar to the corresponding beds at the march 

 of Achab farm, near Corrie; a calcareous conglomerate, 

 with beds of white limestone, being highest of the Old Red 

 series, or perhaps the lowest of the carboniferous. 



These are followed, at the eastern side of Lagantuin Bay, 

 by sandstones dipping N.N.W., beds of red shale of moderate 



