D-GRUPPE -Germany's First Super Hero Team: What Is The Externsteine -What is the D-Gruppe Connection?

The first ever D-Gruppe (published) strip took place at Externsteine -The Revenge of the Ice Queen- and has been seen in other strips. Never heard of it? This is what Wikipedia says:

"The Externsteine is a distinctive sandstone rock formation located in the Teutoburg Forest, near the town of Horn-Bad Meinberg in the Lippe district of the German state of North Rhine-Westphalia. The formation is a tor consisting of several tall, narrow columns of rock which rise abruptly from the surrounding wooded hills. The Hermannsweg, a long-distance hiking trail, passes through the formation.

"In a popular tradition going back to an idea proposed to Hermann Hamelmann in 1564, the Externsteine are identified as a sacred site of the pagan Saxons, and the location of the Irminsul idol reportedly destroyed by Charlemagne; there is however no archaeological evidence that would confirm the site's use during the relevant period.

"The stones were used as the site of a hermitage in the Middle Ages, and by at least the high medieval period were the site of a Christian chapel. The Externsteine relief is a medieval depiction of the Descent from the Cross. It remains controversial whether the site was already used for Christian worship in the 8th to early 10th centuries."

You've seen D-Gruppe and other German heroes at Externsteine in the above pages so now....a photo drop!