Burgstallkogel (Sulm valley)

The Burgstallkogel (458 meters or 1563 feet; also known as Grillkogel) is a hill situated near the confluence of the Sulm and the Saggau river valleys in Southern Styria in Austria, about 30 km south of Graz between Gleinstätten and Kleinklein. The hill hosted a significant settlement of trans-regional importance from 800 BC to about 600 BC. Surrounding the hill is one of the largest Iron Age necropolises in continental Europe, originally composed of at least 2,000 tumuli.