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34 B GEOLOGICAL SURVEY OF CANADA

ally rough character and to the impediments from fallen timber and dense
scrub. The small streams are frequently almost impassable, owing to boulders
and drift timber, and great care is requisite to prevent serious accidents in
traversing these.

The sandstone and shale which, with occasional outcrops of igneous,
are the only rocks seen in this part of the island, are similar in many
respects to those seen along the Honna shore. Fossils, generally poorly
preserved, are seen in some of the beds, and indicate the general horizon of
the formation as upper Cretaceous. The conglomerate on the trail to Camp
Robertson probably represents the northern extension of the similar rocks
seen on the shore near the mouth of the Honna, where there is an apparent

-anticline which should carry these rocks northwest on their strike, or in the

direction of the conglomerate outcrops on the trail near the six mile camp.

The only means of access to the mining camps at Robertson and Wilson,
is by means of the trail up the Honna. This keeps close to the river for
about four miles, to what is called the four-mile camp which is just at the ~
crossing of the west branch. The rise in this distance is 220 feet, so that
the fall in this part of the stream is quite rapid. Thence the trail rises
quickly and passes along the east flank of a rugged and hilly country, until
in two miles, at the six-mile camp, the elevation is 900 feet, the rocks at
this place being conglomerates associated with black shales and grey sand-
stone. J*rom the six-mile camp the trail winds around the eastern flank of
the hills at elevations varying from 830 to 960 feet, to a small brook that
crosses the trail about one mile southeast of Camp Robertson, at an eleva-
tion of 900 feet. The stream, named Falls brook, flows over a series of
grey sandstones with bands of shale lying nearly flat; but in the next third
of a mile the trail reaches the summit of a ridge at an elevation of 1150
feet about three-fourths of a mile east of the coal outcrops at Robertson
camp. ‘Thence it descends rather rapidly to 950 feet, which is the height
of Camp Robertson above sea-level. The distance from the shore by this
trail is not far from eight miles; and the path is in places in very bad
condition.

The Wilson camp can be reached by trail from Camp Robertson, a dis-
tance of about nine miles, or by following up the valley of the Honna from
the four-mile camp direct. Taking the route from Camp Robertson, the trail
first passes over the Robertson ridge to the north, and then descends some-
what rapidly for 600 feet in a mile and a half to the valley of the Hast
branch of the Yakoun. It then passes across a comparatively
low area, until it meets the main trail from the mouth of the
Honna direct to Camp Wilson, and then rises abruptly to the top
of a ridge 960 feet high, or a little above the level of the other camp.