The waterfall Þjófafoss is part of the Þjórsá river that stretches from the Icelandic Highland all the way to the south shore in the Southern Region in Iceland. It is the longest river in Iceland 230 kilometers from Bergvatnskvísl the northernmost source at Srengisandur. According to folklore and history, the waterfall got its name from practice in the old judiciary system in Iceland, as thieves were thrown into the waterfall to finish their sentence. Almost without exception, none have ever been seen again. The waterfall is south of the beautiful mountain Búrfell. The river is a “tamed beast” as the water flow is controlled and supervised by Landsvirkjun, the main producer electricity in Iceland. As a consequence sometimes the river dries up, and the powerful waterfall almost disappears. A bit strange, but would probably have been welcomed by some of the criminals who were thrown into the waterfall ages ago. (source hiticeland)