30> N. Hf. Davton—Shawangunk Mountain. 
vicinity of the road the grit has been removed from the crown 
of the arch for some distance. ‘The road crosses the ridge in a 
gap onthe Hudson shales, and the edges of the grit give rise to 
high cliffs on either side. Down the slope aways, the grit out- 
crops on the flank of the arch, but the slate extends along the 
upper slopes of the mountain for some distance, especially on the 
east side. The occurrence of the slate in this inlymg area is a 
very striking feature, and the reason for the removal of the grit 
at this locality is not clear. 
South of lake Minnewaska the front of the ridge trends south- 
westward some distance, and the Coxingkill anticlinal and the 
anticlinal next west, pass out to the south. There is a promi- 
nent “ point” in this vicinity known as Gertrude nose, which is 
due to a deep incision in the front of the mountain made by a 
small branch of the Wallkill. This stream heads on the plateau 
south of the lake, passes over the edge of the grit in a series of 
falls, and has cut a deep gorge into the Hudson shales below. 
T'iqure 3.—Lake Awosting jrom the East-northeast, Sums Point inthe Distance. 
Lake Awosting is the largest lake of the series, and has a 
length of about a mile. It is surrounded in greater part by low 
clifis and rocky slopes, but near its eastern end there is a line 
of very high cliffs which extend in from the crest of the moun- 
tain eastward and constitutes a high, west-sloping plateau north- 
east of the lake. In figure 3 there is given a view of this lake 
based on kodac photographs. 
The basin of the lake does not appear to be in Hudson shales, 
although possibly they underlie its deeper portions. The grit 
dips gently westward along the lake and this dip continues over a 
wide area of surrounding region, On the west there is a long 
slope to the main Peterkill valley, which extends from a low 
cliff along the lake. The outlet of the lake is by a fork of the 
