Siljan (lake) in the center of the ring, distant from the ring sediments and from Gravberg-1. This well went to a depth of . The hole produced gases and oily magnetite sludge similar to those found in Gravberg-1. Siljan (lake) Siljan, in Dalarna in central Sweden, is Sweden's sixth largest lake. The cumulative area of Siljan and the adjacent, smaller lakes Orsasjön and Insjön is . Siljan reaches a maximum depth of , and its surface is situated above sea level. The largest town on its shore is Mora. The lake is located around the southwestern perimeter of the Siljan Ring (Swedish:
Siege of Mora western border with Nigeria, was guarded by a company of "Schutztruppen" (protection troops) under the command of Captain Ernst von Raben. Initially the garrison consisted of 14 European and 125 African soldiers, most of whom were tough, well-trained Askaris. Von Raben managed to recruit 65 more men before the Allied siege began. On 13 August, the German commander relocated the garrison from the fort on the plain to positions partway up Mora mountain. This gave them a commanding view over the surrounding area and easy access to water. Mora mountain, which would become a fortress during the siege, was approximately