The Rhine-Weser watershed runs over the summit of the Himmeldunkberg and neighbouring hill of Hohe Hölle and forms the boundary between Bavaria and Hesse as well as the long-distance trail, the Rhön-Höhen-Weg (RHW).

The arc from southwest to east is open; mainly covered by grasses, blackthorn, rose hips, silver thistles and bellflowers.

A refuge hut, the Würzburger Hütte, belonging to the Würzburg branch of the German Alpine Society (DAV) is situated on the western slope at a height of 835 m. There are plans to move the hut to a "place more compatible with nature preservation", and also to reach an agreement with the glider flyers who are not allowed to use the mountain any more.

About 50 m south, below the summit, is the Hexenbuchen ("witches' beeches") nature monument, which is a favourite photographic subject.

From the plateau there is a superb view over Bischofsheim to the Kreuzberg, the Osterburg ruins, the Arnsberg, the Black Mountains, the Schachen, the Eierhauck, the Dammersfeld, the Reesberg, the valley of the Brend and the upper Sinn.