OF THE PARALLEL ROADS OF LOCHABER. 
707 
(over which there was no passage at this point), shows broadly the position of the 
underlying rock, and the greater accumulation of debris at the bottom of the hill, 
Fig. 15. 
Section of tlie three “ roads ” exposed by a small ravine on the east side of Glen Roy, a short 
distance above Achavady. (The fissure as here represented is too wide.) 
b-cl. Undistinguishable gravelly debris. in. Moraine detritus or Till ? 
* Loav cliff cut back by the river. r. Rock. 
together with the presence at base of a grey argillaceous detritus, apparently Till or 
Boulder clay. The rock is here very near the surface—nearer, I imagine, than usual. 
Fig. 16. 
Near this spot Mr. Brown obtained the side view of the three “ roads ” shown in 
fig. 16. Above “road” No. 3 there is here the same indent (or superior talus, as it 
has been called) that Macculloch noticed in one other case. Fig. 17 represents a 
