Pfahl (Bavarian Forest)

From a geomorphological point of view, it represents a residual ridge that has been formed by weathering and erosion over millions of years.

The Pfahl consists of quartz that was deposited as a hydrothermal vein about 275 million years ago within the existing fault structure.

The shining white quartz of the Pfahl consists of up to 98% silicic acid; any yellowish to reddish or grey coloration is caused by iron compounds and impurities (Pfahlschiefer).

The quartz formations are most easily visible near Viechtach (west of the town) and here they rise up to 30 metres above the ground.

Through the Zellertal valley between Bad Kötzting and Bodenmais another Pfahl-like slate zone runs parallel to the actual Pfahl and in which the quartz does not immediately outcrop.