EXCURSION III. 



93 



in which the rock decomposes. About twenty courses of 

 huge slabs are piled up into a lofty mural precipice. A walk 

 is recommended down the north-west front to the dividing 

 ridge, past the north summit, to have a better view of the 

 corries, and a peep into the dark depths of Glen Sannox. 



Fig. 19. 

 Cyclopean Walls. 



The first col on our descent is marked by a dike of gray trap, 

 about twenty-five feet wide, with felspar crystals, giving it a 

 porphyritic structure, whose disintegration has determined 

 the formation of the col. It cuts the Ceims, on the opposite 

 side of Glen Rosa, and is there marked by a depression ; the 

 range is about west 25 south. Another dike ten feet wide, 

 with, the same range, is seen a little north of the north top 

 of Goatfell ; continued across the glen, its course is right up 

 the eastern front of Cior-Mhor. The wild grand cliffs along 

 here are formed of huge sheets, rising tier on tier towards the 

 west, and dipping gently back east in the direction of the 

 rims of the corries. We might easily descend by this route to 

 the Sannox road, either by the south base of Cioch-na-h'oighe, 

 or farther south by the hill-sides over the village of Come, 

 to meet the evening boat for Brodick. But we must return 

 back by the summit of Goatfell to examine the corries and 

 descend another way, more picturesque and full of instruction. 



