Philipp Scharwenka's Bergfahrt captures the intense, craggy nature of a mountain journey. It is characterized by thick, post-Lisztian harmonic writing and demanding, percussive chordal passages.
The technical challenge lies in the execution of large, powerful chords with sustained intensity.
Comparable difficulty and character — good candidates for what to learn next.
Bergfahrt (Op.36) is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7. In the RCM system it corresponds to about level 8.
You should be comfortable at Henle level 5 — meaning you can already play level 4–5 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
A typical performance of Bergfahrt (Op.36) lasts about 5 minutes.
Bergfahrt (Op.36) is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.
Pieces at a comparable difficulty and character include Passacaglia by George Frideric Handel, Ballade by Samuel Coleridge-Taylor, 'The King of the Jews' - Incidental Music by Alexander Glazunov — see the full similar-pieces list on this page.