The third seal was inside Mount Varuun, the tallest of the silver mountains behind Lyra's own village. She had looked at it her whole life and never guessed what it held.
The mountain hummed. Not loudly — you had to press your ear to the rock to hear it — but it was constant, like a great heart beating deep inside the stone. Solenne said it was the sound of old magic, settled and patient as geology.
Getting inside required solving three riddles carved above the mountain's hidden entrance. Lyra got the first two on her own. The third — What has a face but no eyes, hands but cannot hold? — stumped her for an hour until Solenne sneezed, scattering stardust across the rock face, and Lyra laughed and said, "A clock!" The door swung open.
Inside, the mountain was hollow and warm. Crystals the size of trees grew from the walls, each one glowing faintly, resonating with the mountain's hum. The seal here was embedded in the largest crystal of all.
But something guarded it. A creature of pure shadow, shapeless and cold, moving between the crystals like smoke.
The Shadow Loom had left a piece of itself behind.
Lyra's hand found the obsidian stone her grandmother had given her. She held it up. The shadow recoiled from it — and she understood, suddenly, what the stone was for. Not luck. Not comfort. A key.
She pressed the obsidian stone to the shadow creature's center. It dissolved with a sound like a sigh. And the seal beneath the crystal blazed to life and sealed itself whole.
Three down. Two to go.
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