THE BERNESE OBERLAND. 
153 
126); these are really the remains of folds as shown 
in the figures. 
On the Gstellihorn there are actually five of these 
wedges or folds. It is in this respect the most re- 
markable case in the district. 
The line of junction of the gneiss and the Cal- 
careous rock is perfectly clear and sharp, so that the 
hand may cover both kinds of rock at the same time. 
There is absolutely no trace of any intermediate 
layer, such as marble, nor any change in the char- 
acter of the Calcareous rock.* 
It is evident, therefore, that the schists and sedi- 
mentary rocks have not been actively broken through 
by the granite and gneiss, but that they were de- 
posited on them, all three having been passively and 
simultaneously thrown into folds. 
The great wall of the Bernese Oberland (Fig. 121, 
ante, p. 144), which stretches eastwards from the 
Gemmi by the Balmhorn, the Doldenhorn, the Bliimlis- 
alp, the Eiger, the Mittellegi, the Scheidegg, the Gadmer 
Fluh, and the Schlossberg to Erstfeld on the Reuss, 
with a nearly perpendicular height of 1000 metres, is 
in fact the escarpment of the Secondary rocks, which 
formerly covered the whole massif. 
That these Secondary rocks once extended further 
* Fellenberg, Beitr. z. Geol. K. d. Sclvw., L. xxi. 
