Once the outline was complete, the doors swung outward upon hidden hinges, scraping aside the dirt and plants that had accumulated before the spire since the doors had last opened, whenever that had been. Through the doorway was a huge vaulted tunnel that descended at a steep angle into the bowels of the earth.
The doors ground to a halt, and the clearing fell silent again.
Eragon stared at the dark tunnel, feeling a sense of increasing apprehension. They had found what they were looking for, but he still was not sure if it was a trap or not.
Solembum did not lie, said Saphira. Her tongue darted out as she tasted the air.
Yes, but what’s waiting for us inside? asked Eragon.
This place should not exist, said Glaedr. We and the Riders hid many secrets on Vroengard, but the island is too small for a tunnel as large as this to have been built without others knowing. And yet I have never heard of it before.
Eragon frowned and glanced about. They were still alone; no one was trying to sneak up on them. Could it have been built before the Riders made Vroengard their home?
Glaedr thought for a moment. I do not know.… Perhaps. It is the only explanation that makes sense, but if so, then it is ancient indeed.
The three of them searched the passageway with their minds, but they felt no living thing within it.
Right then, said Eragon. The sour taste of dread filled his mouth, and his palms were slick within his gloves. Whatever they were about to find at the other end of the tunnel, he wanted to know once and for all. Saphira was also nervous, but less than he.
Let us dig out the rat hiding in this nest, she said.
Together then, they walked through the doorway and into the tunnel.
As the last inch of Saphira’s tail slid over the threshold, the doors swung shut behind them and closed with a loud crack of stone meeting stone, plunging them into darkness.
“Ah, no, no, no!” growled Eragon, rushing back to the doors. “Naina hvitr,” he said, and a directionless white light illuminated the entrance to the tunnel.
The inner surfaces of the doors were perfectly smooth, and no matter how he pushed and pounded on them, they refused to budge. “Blast it. We should have used a log or a boulder to wedge them open,” he lamented, berating himself for not thinking of it beforehand.
If we have to, we can always break them down, said Saphira.
That I very much doubt, said Glaedr.
Eragon regripped Brisingr. Then I guess we have no choice but to go forward.
When have we ever had any choice but to go forward? asked Saphira.
Eragon altered his spell so that the werelight emanated from a single point near the ceiling—otherwise the lack of shadows made it difficult for him and Saphira to judge depth—and then, together, they started down the slanting tunnel.
The floor of the passageway was somewhat knobbly, which made it easy for them to maintain their footing in the absence of steps. Where the floor and the walls met, they flowed together as if the stone had been melted, which told Eragon that it was most likely elves who had excavated the tunnel.
Down they went, deeper and deeper into the earth, until Eragon guessed they had passed under the foothills behind the Rock of Kuthian and burrowed into the roots of the mountain beyond. The tunnel neither turned nor branched, and the walls remained utterly bare.
At last Eragon felt a hint of warm air rising toward them from farther down the tunnel, and he noticed a faint orange glow in the distance. “Letta,” he murmured, and extinguished the werelight.
The air continued to warm as they descended, and the glow before them waxed in brightness. Soon they were able to see an end to the tunnel: a huge black arch that was covered entirely with sculpted glyphs, which made the arch look as if it were wrapped in thorns. The smell of brimstone tainted the air, and Eragon felt his eyes begin to water.
They stopped before the archway; through it, all they could see was a flat gray floor.
Eragon glanced back the way they had come, then returned his gaze to the arch. The jagged structure made him nervous, and Saphira as well. He tried to read the glyphs, but they were too jumbled and too densely packed to make sense of, nor could he detect any energy stored within the black structure. Yet he had difficulty believing that it was not enchanted. Whoever built the tunnel had succeeded in hiding the latch spell for the doors to the outside, which meant they could have done the same with any spells they had placed upon the arch.
He exchanged a quick look with Saphira, and he wet his lips as he remembered what Glaedr had said: There are no more safe paths.
Saphira snorted, releasing a small jet of flame from the pit of each nostril, and then, as one, she and Eragon walked through the archway.
LACUNA, PART THE FIRST
ragon noticed several things at once.