THE FRESH-WATER LOCHS OF SCOTLAND. 
355 
LOCHS OF THE LOCHY BASIN. 
The Lochy basin is a large and important one, having on its boundary- 
line and within it some of the highest peaks in Scotland, including the 
o B IS 20 
FIG, 51. INDEX MAP OF THE LOCHY DISTRICT. 
highest — Ben Nevis. It stretches from Sgor nan Coireachan on the west 
to Meall Cruaidh and Creag Ruadh on the east, a distance of over 40 
miles, and from Glas Bheinn and Leim Uilleim on the south to Cam 
Dearg and Cam Leac on the north, a distance of over 20 miles, the 
total area of the basin exceeding 400 square miles. Within this basin 
ten lochs were sounded by the Lake Survey staff, viz.. Lochs Lochy, 
Arkaig, Pattack, na h-Earba (east and west), Laggan, Ossian, Ghuil- 
binn, Treig, and an Dubh Lochan. Five of the lochs exceed 3 miles in 
length, and four exceed 5 miles in length, while one of them (Loch 
