Sarentine Alps / Bolzano porphyries

South of the Pusteria valley and to a lesser extent in the northeastern Sarentine Alps (Sarntaler Alpen) is a zone of quartz phyllites, mainly dark colored. In Rasciesa (Raschötz, 2,283m/7,534ft) and the southern Sarentine Alps this is overlaid by the Bolzano porphyries, hard reddish volcanic rocks of the Permian period.