Großer Auerberg, Mountain summit in Mansfeld-Südharz, Germany.

Großer Auerberg is a 580.4-metre-high hill in the eastern Harz, within the Harz/Saxony-Anhalt Nature Park. It has a double summit: the main peak at 580.4 metres and the Josephshöhe at 580.3 metres, about 470 metres apart. The hill is made of rhyolite (quartz porphyry) containing quartz and orthoclase crystals known as Stolberg Diamonds.

The Große Auerberg is built of rhyolite, a volcanic rock whose fine-grained matrix holds crystallised quartz and orthoclase known as "Stolberg Diamonds", up to 13 mm across. On the lower summit, the Josephshöhe, a 38-metre steel lattice tower in the shape of a double cross, the Josephskreuz, was erected in 1896. The Landesstraße 236, once the Harzschützenstraße border road between Thuringia and Saxony, passes north and east of the hill.

The path from the Schindelbruch car park up to the Josephskreuz is called Straße der Lieder (Road of Songs); 16 boards along it carry the texts of German folk songs. The Josephshöhe is checkpoint no. 215 of the Harzer Wandernadel, with the stamp box near the cross.

Hiking trails lead to the mountain from nearby towns including Straßberg, Hayn, Schwenda, Stolberg, and Breitenstein. You can reach it on foot from any of these starting points.

The Straße der Lieder, the path from the Schindelbruch car park up to the Josephskreuz, is lined with 16 boards printed with the texts of German folk songs. The Josephshöhe also holds checkpoint no. 215 of the Harzer Wandernadel, a stamp near the cross for walkers collecting the network's stamps.