The room they wherein were too dark for him to really know where the Fire Pillars were located. And based on his earlier assessment of this chamber, this place was large and perhaps even larger than the room before the First Hall. Looking above, he so only darkness, signifying that the room had a high ceiling.
The next quest told him that he must lit at least six of them to allow passage.
"What now?" Finn asked beside him, sweating profusely.
He let one of his fireballs scanned the room. The insect parted before it as it traveled. Soon, it stumbled upon a stone spire. It was too far for him to realize the details but he thought the structure he found was the Fire Pillars.
"There," Silas said, pointing at the direction of the rising spire. "We have to light those things for us to open the next door."
Finn stared at it and nodded at him. "I'll follow you from behind."
