Map of Inferno Zone.

Good leveling up room :
Inferno map

Flame of Fire Devil-1 (murians)

Flame of Fire Devil-5 (mutans)

Secret cave: (Rock cutting sword is not required)Edit

Entrances: Flame of Hell-3; Flame of Hell-4

One of the few places where green minerals can be found reliably!

Notes: Flame of hell-3 entrance in bottom right of area, rock cutting sword required. Flame of Hell-4 entrance is impossible to reach without using skill after doubble jump, but is do able, though not quite as easy as Flame of Hell-3.