The Thorndeep

An ancient underground complex beneath Thornhollow, of unknown origin and unknown depth. The locals call it the Thorndeep — “thorn” for the town, “deep” for obvious reasons.

What’s Known

• The architecture does not match any known civilization on Greno
• Stonework is unnaturally precise; geometry is deliberate and repeating
• Some mechanisms found inside still function despite extreme age
• The upper levels have been picked through by generations of Thornhollow salvage-workers
• The deeper levels are sealed — by collapse, by doors that resist force, and by wards that the crews learned not to touch
• Air currents and acoustics suggest at least five levels; only three have been mapped

Layout (as understood by the salvage crews)

Level 1 — The Shallows

Accessible through The Breach (collapsed passage in the Old Quarter). Wide corridors, empty storage rooms, broken shelving. Picked clean decades ago. Some chambers show signs of habitation — not by the original builders, but by people who came after and didn’t last.

Level 2 — The Workshops

Smaller rooms with stone workbenches, tool racks (empty), and channels cut into the floor that may have carried liquid, power, or both. A few intact mechanisms have been pulled from this level — gears that turn without visible input, inscribed plates that hum when touched. This is where most of the “weird work” that built Dorian’s reputation originated.

Level 3 — The Sealed Wing

The deepest level anyone has reached. Corridors narrow. Doors appear — some open, some locked, some warded. One chamber at the far end of the third level was where Dorian found the Soul Core: a small, clean room with a single pedestal, as if the object had been placed there with care and intention.

Was the Soul Core room a vault, a shrine, or a delivery?

The room was clean. The pedestal was intact. Nothing else was disturbed. That doesn’t look like abandonment — it looks like someone prepared this room for the object to be found. By whom?

Levels 4+ — Unknown

Sealed. The doors on this boundary don’t respond to force, lockpicking, or any magic the salvage crews have tried. Air moves through gaps in the stone, suggesting open space beyond. Occasionally, sounds carry up — rhythmic, faint, probably structural settling. Probably.

What's behind the sealed doors?

The builders sealed them deliberately. The wards are still active after an unknown number of centuries. Whatever is down there was either too valuable to leave accessible or too dangerous to leave open. Either answer is concerning.

The Builders

Nobody knows who built the Thorndeep. Theories among the Thornhollow locals:

• Old Greno settlers — a civilization that predates everything currently on the continent
• Something tied to the gods — the precision suggests divine or near-divine craftsmanship
• Extraplanar origin — the geometry doesn’t follow patterns found anywhere else on Vitas Nova
• The Creator’s own work — whispered but never said aloud, because the implications are uncomfortable

The Ironwright Compact has a standing policy: document what you find, don’t break what you don’t understand, and don’t go past the third level. Most people follow the rules. Dorian didn’t.

Salvage

Over the generations, the Vaults have produced:

• Scrap metal of unusual purity
• Stone blocks that can be recut but resist weathering
• Intact gears and small mechanisms (valuable to the Ironwright Compact)
• Inscribed plates with symbols no one can read
• The occasional warded object that does something nobody can explain
• One Soul Core (Dorian’s, pulled from Level 3)

Has anyone else ever found a Soul Core?

Dorian found one. The Vaults are old and deep. Is his the only one, or are there more — still sitting on pedestals in sealed rooms, waiting?