 In 2006 several large caverns were discovered in the "Vetterhöhle", and in the autumn a connection was discovered between the "Vetterhöhle" and the "Wolkenschloss".Also in the autumn of 2006, the "Arbeitsgemeinschaft Blautopf" discovered an enormous cavern at the end of the Landweg, measuring long by wide by 50 m high, which was named "Apokalypse".The groups are now also working with yet another Arbeitsgemeinschaft on a sinkhole north of Blaubeuren, which is believed to be connected with the Blauhöhle behind the "Apokalypse".