Since the Efreeti took nearly a year to transform the Steam Lake into the Molten Lava Lake, awakening a dormant volcano should not be easier than the former. Leon originally thought it would take a year or two, but unexpectedly it would only take a few days or a month, which made him overjoyed.
He cannot be blamed for his ignorance; his body did not inherit practical knowledge from his parents, only a soul from another world—a soul that belonged to a student of the sciences, who did not study geography too well... Heaven knows why geography is considered part of the humanities.
How could he know the origin of the Steam Lake, what geothermal heat and hot springs are? A dormant volcano is merely not erupting; its magma chamber is no longer active, but still maintains a certain temperature and pressure, waiting for a trigger to erupt.
"What else?" Leon asked, "Apart from the time consumed, are there any magic materials needed?"
