In 2021 the minister for environment Thekla Walker (A90/The Greens) announced plans to extent the national park and eventually connect the two parts in the following years.

The lowest and most easterly point of this park is at the confluence of the Schwarzbach and Raumünzach streams, at a height of just below 500 m. Excluded are the village of Herrenwies as well as smaller areas around Plättig, Sand and the youth hostel of Badener Höhe.

In the northeast, it borders to the Schwarzenbach Reservoir, and in the west to the Bühlerhöhe beyond the Black Forest High Road.

The greater part of the Ruhestein area extends reaches a height of approximately 1,150 m above NHN near Dreifürstenstein in the southeasternmost summit region of the Hornisgrinde, the highest mountain in the northern Black Forest.

Other summits are the bird's head (Vogelskopf) (1,056 m) and the Schliffkopf (1,054 m) to the west, the Seekopf (1,054 m) in the northwest, the Riesenköpfle (1,001 m) in the centre, the Leinkopf (992 m) in the north and the Großhahnberg (940 m) in the northeast.