The castle mound sustains several defence systems which date back to the early middle ages. Moreover, settlement remains from the ice age and neolithic period from the hill top refer to an intensive settlement of the mountain. The different types of castle forms can be distinguished between the North Wall, the East Ring, the Middle Wall and the West Ring (which is actually the only remining part, although ruined) There are indications to the period of clashes between Karl the Great and the Saxons – which also bear witness to the national importance of the base for the further territorial development over and above Iserlohn as an outward going area.

At the Stunenburg we are dealing with the remains of a partially planned castle site, Furthermore, it is to be considered that within the inner rooms, traces of the former castle are still in the ground. Findings allow one to assume that the castle was in existence between 12/13 and 15th century. The ground historical monument is therefore, of importance for the history of the Town of Iserlohn while a possible archaeological research so far cannot produce definite facts.

The small territorial barrier is to be regarded as a blockade of the old route „Altena – Iserlohn“. In 1620 a barrier is recorded as being present. Under the term „territorial blockade“ – an embankment construction which cordons or blocks off a piece of land to one or more sides. Territorial barriers were generally set up during or directly following town, church, court or territorial rulings. The aim is not primarily to show a border line, but more to set up a demarktion line. In the first instance it should serve as a monument for the protection of the peace– this intensification being one of the main aims of the late Middle Ages –premature territorial county/state. The Landwehr – territorial barrier can be found on the town border of Iserlohn and Altena.

With the area north of the Rotehausstraße, today used as agricultural land, we are dealing with remains from the Middle Stone Age period, south-east of Reingsen. These findings are a legacy from humans who settled in the low mountain range (Mittelgebirge) some 6,000 years ago. We are dealing with a nomadic population who lived from hunting and collecting edible fruits and whose tools existed from slate, apparent in the mountains and the „non-local“ here flint.

Today used as agricultural land, there are findings of a middle stone age site on the Reitenberg between Oestrich and the Schälkstraße.
For further clarification see Rotehausstraße above.