There was an increasing heat in the tunnel that Gil knew was coming from bubbling magma. He pretended not to hear the soft rumbles getting louder since he knew the danger that it held. He also silently sent blessings to Remey since she had given him the bark to chew on. He could feel the burn of his eyes and nostrils from the fumes produced.
The wind elemental mana that had naturally gathered around Gil seemed to increase as he moved through the tunnel. This didn't make much sense since he was heading toward a string source of fire elemental mana with a lot of earth elemental mana from the stones nearby. But he just accepted it since he was still unsure how to handle the newfound increase in his senses.