Himmeldunkberg, Mountain summit in Rhön range, Germany.

Himmeldunkberg is a mountain summit in the Rhön range that rises to 888 meters with steep northern slopes and open southern areas. The northern sides are covered in mixed deciduous forest, while the southern areas feature varied plant growth.

The mountain's name comes from a 1059 charter in which King Henry IV granted the Fulda Abbey a hunting ban in the Huuimuododung, Old High German for 'Berg der Frau Hugimuot'. The border between the Kingdom of Bavaria and the Kingdom of Prussia ran across the summit; boundary stones set in 1872 still stand there.

About 50 to 150 metres below the summit stand the Hexenbuchen, a group of old copper beeches that once sheltered grazing animals from sun and weather. The name means "witches' beeches", and the trees are a favourite subject for photographers.

Multiple hiking trails lead to the summit, with access points available from Oberweißenbrunn, Bischofsheim, or the Schwedenwall parking area for different hiking experiences. Your choice of starting point depends on the route length and difficulty you prefer.

The 2022 summit cross is 10.70 m tall and weighs 11 tonnes, fixed with 16 stainless-steel anchors set in 12 m³ of concrete poured to a depth of 1.60 m. Until then the summit area had no structures at all.