Isten-Berg, Mountain summit in North Rhine-Westphalia, Germany.

Isten-Berg is a mountain in North Rhine-Westphalia reaching 728 meters in elevation and covered by thick woodland. Several marked hiking paths wind through this forested landscape to reach the summit.

The mountain's northwest flank holds the Bruchhauser Steine, four porphyry crags up to 92 m high (Bornstein, Feldstein, Goldstein, Ravenstein) that raise the height to 756 m. Between the rocks lie the remains of a Germanic refuge fort. The crag area was designated a nature reserve in 1951, covering 84 ha.

The mountain's name is linked to the legendary prophetess Veleda, who according to local lore advised seekers in a cave inside the Istenberg during Roman times. The four porphyry crags of the Bruchhauser Steine, up to 92 m high, stand on the northwest flank and are a landmark of the area.

The hiking routes start from the base of the mountain where parking is available for visitors. Wearing sturdy shoes and following the marked paths is important for a safe and comfortable climb.

The summit height of 728 metres refers to the earth summit; the Bruchhauser Steine on the northwest flank rise to 756 metres at the Feldstein, which is not counted as the Istenberg summit. Maps also show a 721-metre spot height on a forest path crossing about 200 metres southwest of the top.