Complex sentence: It is a narrow side valley of the Höllental, through which the Ravenna stream flows and a trail runs; the trail is part of the Black Forest Homeland Path ("Heimatpfad Hochschwarzwald").
Split into simpler sentences: It is a narrow side valley of the Höllental, through which the Ravenna stream flows. A trail also runs through the ravine as part of the Black Forest Homeland Path ("Heimatpfad Hochschwarzwald").