Steinsburg is the colloquial name for the remains of a Celtic oppidum on the Kleiner Gleichberg in the German state of South Thuringia. It is located within the county of Hildburghausen by Waldhaus near the small town of Römhild.
The Kleiner Gleichberg and the neighbouring Großer Gleichberg form a pair of "geological twins". Both mountains are basalt cones which are volcanic in origin. The name Steinsburg probably derives from the large stone fields that surround the mountain summit plateau.
Wikipedia https://en.wikipedia.org/wiki/Oppidum_Steinsburg
Address 98630, Germany
Coordinates 50°24'38.123" N 10°35'32.007" E