The Schwarza is a left tributary of the Saale in Thuringia, Germany, and 53 km long. Its source is in the Thuringian Forest, near Neuhaus am Rennweg. It flows into the Saale in Rudolstadt. Other towns on the Schwarza are Schwarzburg and Bad Blankenburg. It has 50 tributaries, the largest being the Lichte, the Sorbitz, the Werre and the Rinne. Its name, meaning "black river", comes from its dark colour in its upper course and the thick forest which originally overshadowed the narrow valley.
The Schwarza valley parallels the axis of the Schwarzburg anticline , a structure that divides the Thuringian forest to the northwest from the Thuringian Highland to the southeast. The Schwarzburg Anticline was created by the collision between Laurentia and Gondwana around 350 million years ago. The rock of the Schwarzburg Anticline is metamorphic, with a core of ordovician rock, largely quartzite. The river is geologically unusual for the large number of kolks in its lower course.
Copyright: CC 3.0