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Intact buildings in The Onyx City
Summoning Chambers of the Grey Sorcerer
The place where the chief sorcerer of the Greys (now a demilich or some such) still labors to summon Yog-Sothoth to open a conduit to the homeworld directly. A cult has formed around the Grey Sorceror devoted to these ends.
The Exocortex of the Hive
A giant store of knowledge of the Greys, in giant vats of a thick fluid filled with tiny crystalline beads suspended throughout. These are basically mass storage devices full of mind-destroying knowledge.
The Parts Warehouse
A giant warehouse full of crates and robots moving them about endlessly. Most are empty, because everything had been gone through, and what remains may be dangerous or incomplete.
The Factory
A place where the needs of The Onyx City were made. As supplies stopped coming through the Skein things here started to go pear-shaped or breaking down. Now it’s a sea of complicated machinery that doesn’t work (or malfunctions), strange vats of dangerous fluids and repair robots trying to get everything under control.
The Skein Viewing Apertures
A place where clairvoyant viewing of different endpoints in the Skein may be seen through special apparatus.
The Transmitter
A giant tower that is an interstellar transmitter, which the Greys used to try to contact home after the connection to their world in the Skein collapsed. A ship was sent before in response, but crashed (see hex map) and no further contact has been made.
The transmitter is currently not operational, but if reenabled it could signal to the homeworld to send yet another craft, thinking that the colony on Thule was still operational. Of course, it would take some time.
The Crystal Gardens
Much of Grey technology is built around crystals; this is where the crystals are grown. You may find robots, constructs and crystal-eating monsters exist here.
