“Thirteen—”

“We take our first rides at four. Or the others do. I was, as you know, a few years late.”

Nesryn pointed to the training run. “You let four-year-olds ride alone through that?”

“Family members or hearth-kin usually go on the first several rides.”

Nesryn blinked at the little mountain range, trying and failing to imagine her various nieces and nephews, who were still prone to running naked and shrieking through the house at the mere whisper of the word bath, responsible for not only commanding one of the beasts beneath her, but staying in the saddle.

“The horse-clans on the steppes have the same training,” Sartaq explained. “Most can stand atop the horses by six, and begin learning to wield bows and spears as soon as their feet can reach the stirrups. Aside from the standing”—a chuckle at the thought—“our children have an identical process.” The sun peeked out, warming the skin she’d left exposed to the biting wind. “It was how the first khagan conquered the continent. Our people were already well trained as a cavalry, disciplined and used to carrying their own supplies. The other armies they faced … Those kingdoms did not anticipate foes who knew how to ride across thick winter ice they believed would guard their cities during the cold months. And they did not anticipate an army that traveled light, engineers amongst them to craft weapons from any materials they found when they reached their destinations. To this day, the Academy of Engineers in Balruhn remains the most prestigious in the khaganate.”

Nesryn knew that—her father still mentioned the Academy every now and then. A distant cousin had attended and gone on to earn a small degree of fame for inventing some harvesting machine.

Sartaq steered Kadara southward, soaring high above the snowcapped peaks. “Those kingdoms also didn’t anticipate an army that conquered from behind, by taking routes that few would risk.” He pointed to the west, toward a pale band along the horizon. “The Kyzultum Desert lies that way. For centuries, it was a barrier between the steppes and the greener lands. To attempt to conquer the southern territories, everyone had always taken the long way around it, giving plenty of time for the defenders to rally a host. So when those kingdoms heard the khagan and his hundred thousand warriors were on the move, they positioned their armies to intercept them.” Pride limned his every word. “Only to discover that the khagan and his armies had directly crossed the Kyzultum, befriending local nomads long sneered at by the southern kingdoms to guide them. Allowing the khagan to creep right behind them and sack their unguarded cities.”

She felt his smile at her ear and found herself settling a little farther into him. “What happened then?” She’d only heard fragments of the stories—never such a sweeping account, and certainly not from the lips of one born to this glorious bloodline. “Was it open war?”

“No,” Sartaq said. “He avoided outright combat whenever he could, actually. Made a brutal example of a few key leaders, so that terror would spread, and by the time he reached many of those cities or armies, most laid down their arms and accepted his terms of surrender in exchange for protection. He used fear as a weapon, just as much as he wielded his sulde.”

“I heard he had two—sulde, I mean.”

“He did. And my father still does. The Ebony and the Ivory, we call them. A sulde with white horsehair to carry in times of peace and one with black horsehair to wield in war.”

“I assume he brought the Ebony with him on those campaigns.”

“Oh, he certainly did. And by the time he’d crossed the Kyzultum and sacked that first city, word of what awaited resistance, word that he was indeed carrying the Ebony sulde, spread so quick and so far that when he arrived at the next kingdom, they didn’t even bother to raise an army. They just surrendered. The khagan rewarded them handsomely for it—and made sure other territories heard of that, too.” He was quiet for a moment. “Adarlan’s king was not so clever or merciful, was he?”

“No,” Nesryn said, swallowing. “He was not.” The man had destroyed and pillaged and enslaved. Not the man—the demon within him.

She added, “The army that Erawan has rallied … He began amassing it long before Dorian and Aelin matured and claimed their birthrights. Chaol—Lord Westfall told me of tunnels and chambers beneath the palace in Rifthold that had been there for years. Places where human and Valg had been experimented upon. Right under the feet of mindless courtiers.”

“Which raises the question of why,” Sartaq mused. “If he’d conquered most of the northern continent, why gather such a force? He thought Aelin Galathynius was dead—I assume he did not anticipate that Dorian Havilliard would turn rebel, too.”

She hadn’t told him of the Wyrdkeys—and still couldn’t bring herself to divulge them. “We’ve always believed that Erawan was hell-bent on conquering this world. It seemed motive enough.”

“But you sound doubtful now.”

Nesryn considered. “I just don’t understand why. Why all this effort, why want to conquer more when he’d secretly controlled the northern continent anyway. Erawan got away with plenty of horrors. Is it only that he wishes to plunge our world into further darkness? Does he wish to call himself master of the earth?”

“Perhaps things like motives and reason are foreign to demons. Perhaps he only has the drive to destroy.”

Nesryn shook her head, squinting against the sun as it rose higher, the light turning blinding.

Sartaq returned to the Eridun aerie, left Kadara in the great hall, and continued Nesryn’s tour. He spared her the embarrassment of begging not to use the rope ladders along the cliff face and led her through the internal stairwells and passageways of the mountain. To get to the other two peaks, he claimed, they’d need to either fly across or take one of the two bridges strung between them. One glance at the rope and wood and Nesryn announced she could wait for another day to try.

Riding on Kadara was one thing. Nesryn trusted the bird, and trusted her rider. But the swaying bridge, however well built … She might need a drink or two before trying to cross.

But there was plenty to see within the mountain itself—Rokhal, the Whisperer, he was called. The other two brother-peaks that made up the Dorgos were Arik, the Lilter; and Torke, the Roarer—all three named for the way the wind itself sang as it passed over and around them.

Rokhal was the biggest of them, the most delved, his crown jewel being the Hall of Altun near the top. But even in the chambers below Altun, Nesryn hardly knew where to look as the prince showed her through the winding corridors and spaces.

The various kitchens and small gathering halls; the ruk riders’ houses and workshops; the nests of various ruks, who ranged in color from Kadara’s gold to dark brown; the smithies where armor was forged from ore mined within the mountain; the tanneries where the saddles were meticulously crafted; the trading posts where one might barter for household goods and small trinkets. And lastly, atop Rokhal himself, the training rings.

There was no wall or fence along the broad, flat-topped summit. Only the small, round building that provided a reprieve from the wind and cold, as well as access to the stairwell beneath.

Nesryn was out of breath by the time they opened the wooden door to the rasping wind—and the sight that stretched before her certainly snatched away any remaining air in her lungs.

Even flying above and amongst the mountains felt somehow different from this.

Snowcapped, dominating peaks surrounded them, ancient as the earth, untouched and slumbering. Nearby, a long lake sparkled between twin ridges, ruks mere shadows over the teal surface.

She’d never seen anything so great and unforgiving, so vast and beautiful. And even though she was as insignificant as a mayfly compared with the size of the mountains around them, some piece of her felt keenly a part of it, born from it.

Sartaq stood at her side, following where her attention drifted, as if their gazes were bound together. And when Nesryn’s stare landed upon a lonely, broad mountain on the other end of the lake, he drew in a swift breath. No trees grew on its dark sides; only snow provided a cape over its uppermost crags and summit.