1. Locations

Hall of Celestial Navigation

This long hall exhibits the various methods the Annwyn used to navigated the seas, starting with the crudest instruments of their prehistory and ending with the state of the art devices used just before their fall.

Astrolabs, octanes, sextants, and various chronometer’s like the walls with explanations on their properties and usages.

A large domed room in the center is dominated by a huge orrery, the ceiling is black with illusionary stars. 


Solving the Room

The orrery automatically advanced to reflect the current position of the planets, but can be run both forward and backward in time

In addition to the normal stars and planets, below the plane of the elliptic there is an obsidian black plane.

If the orrery is run forward or backward, the proximity of the surface to the planets change, sometimes closer sometimes farther. 

If the orrery is run forward seven years the black plane collides with the planet and the mechanism jams. To unjam the Orrey an Artificer must succeed on a crafting roll DC 16.

if the orrery is run backward to the exact time of the founding of the Annwyn Empire, a teleport circle is revealed, surrounding the outer perimeter of the room.

If an Artificer studies the Orrey for one hour, he can roll a DC 16 check to determine how it operates and how to construct a similar one. In order to construct an Orrey he also needs access to books of navigation and must take celestial readings over the course of a season.

Orrery Description

The orrery dominates the center of the vaulted chamber like a mechanical cathedral, its vast brass arms stretching outwards in elegant arcs. Polished to a mirror sheen, the great gears at its base turn with a deep, steady rhythm, the sound echoing softly off the stone walls—tick, hum, click—as though the machine itself were breathing.

At its heart blazed a miniature Sun, a golden sphere made of polished brass. Each planet is a marvel of craftsmanship: veined marbles, burnished metals, and inlaid stones gave texture and life to their surfaces. Tiny moons orbited some of them in perfect harmony, tethered by gossamer-thin rods that seemed too fragile to hold anything at all.

Above the orrery, a domed ceiling depicted the constellations in glowing inlay, responding to the turning of the mechanism below. As the planets rotated, so too did the stars, synchronized with impossible precision, mapping the heavens in real time.

Below the plane of the planets, the entire mechanism sits upon a dark, undulating sheet of pliable metal, dark as night, also rising and falling in gentle curves. Sometimes the sheet is close to the planets, sometimes farther away, moving in conjunction with the planetary bodies. 

A web of interlocking gears, hidden beneath the sheet feeds the orrery’s continuous motion—centuries-old clockwork still alive, the slow unwinding of coiled springs some large enough to anchor a ship. An iron crank, waist-high and ornately engraved, stood off to the side, allowing the viewer to accelerate or reverse the passage of time. With a single turn, days slipped into years; the planets danced faster, spinning through the ages like a cosmic ballet.

The air around it shimmered faintly, not from heat, but from something older—an aura of reverence and forgotten science. No one alive fully understood how it had been built, or by whom. It was less a model of the universe than a memory of its making, a relic of minds who had once measured time not in hours, but in orbits and light.

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