It took the team roughly a day's time to arrive at the necromancers hideout.
The trail leading to his fortress was dark and patrolled constantly by undead creatures who reacted violently to any sources of light in their vicinity.
To reach the necromancer's hideout, Erin had to constantly cast an illumination spell, which though easy to maintain, drained slowly on his mana reserves.
Despite the dangers of having a light source around them, Rocky insisted that Erin keep up the spell, as to Rocky the freedom to move with full vision was more important than the potential undead threat that the active light source attracted.
In his inventory, he did have a night vision potion that he could use in emergencies, however, with him having only one vial and not five, Rocky decided to have the light source around the team, for everyone's ease of movement.