The road gives out at the foot of the range and the mountains take over: black basalt and grey granite stacked into peaks that hold the storm clouds by their throats. Snow lies on the dark stone, but thinly, and in places the rock beneath it breathes warm. High above, a bridge-city spans a gorge, rope walkways swaying from ledge to ledge, lanterns burning in the wind, forge smoke leaning sideways from every opening in the cliff. The air is thin and tastes of hot iron.
Then the bells begin. Deep forge bells mark the turn of a shift, and others answer from halls you cannot see, somewhere inside the mountain. Between two strokes they stop. The smiths lower their hammers and wait, and under your boots, under the snow and the stone, something keeps a slower rhythm of its own. They wait for it to pass before they ring again.
The place
The Blackspine rises east of the Greenfold and north of the Ember Crown, and most Stonebound holds lie within it. Surface passes are few. Many Stonebound roads go down instead, cross beneath the ridges and come out far from where a stranger expects; outsiders travel them only with escort and contract. Life in the holds turns on craft, testimony and contract. Forge bells mark shifts, warnings, judgments and funerals, and a bridge counts as a promise that lasts as long as someone keeps repairing it. Do not mistake the strict records for unity: the holds quarrel fiercely about mining, arms contracts and who pays when a work fails. Storm gryphons, bell goats and basalt trolls share the heights. Far below the range lie the surest ways into the Underdeep, though no ordinary mine reaches those depths.
Its story
In the Age of Bright Works, Stonebound and Aethyr engineers traded resonance methods, until the Broken Bell Incident killed miners and engineers and cost the smith Hesta Thunderforge an arm. Many holds closed their doors to outsiders after that. Later wars made strategic ore precious and brokers rich. Then the Warm Shaft was opened and an ancient seal broke, and soon afterwards heat began to pulse beneath the mountains, the heat people link with Vuldra, the Heart Under Stone. Whether one caused the other, nobody can prove. Today the Deep Anvil Compact fights for honest, traceable craft against extraction lords and Crown buyers.