The Echos of Rombous

A diagram showing the Rombous effect of joining to alternative universes!

Late with their development the Eldar Things experimented with several 

Femtotechnologies.  These are a smaller scale in comparison to nanotechnology and picotechnology which are 10^-9 m and 10^-12 m respectively. Work in the femtometer range involves manipulation of excited energy states within atomic nuclei (see nuclear isomer) to produce metastable (or otherwise stabilized) states with unusual properties. They used this technology to mine neutron stars, create stable multiversal gate ways, & many other applications. The Necronomicon Works postulates that several technologies were biological rather then instrumentality based. It has been speculated that they had achieved several technologies before coming to Earth. Their  most advanced form of molecular nanotechnology is often imagined to involve self-replicating molecular machines, and there have been some speculations suggesting something similar might be possible with "molecules" composed of nucleons rather than atoms. The Eldar Things are known to have created super dense matter that they used in the construction of many interstellar artifacts!
Using this technology not only have several Dyson swarms left behind by them have been found. This one orbiting Tau Chei is known to have housed several Metaluna Colonies. These were wiped out by the Eldar Things over 20 centuries ago.

Tau Chei Dyson swarm A relatively simple arrangement of multiple Dyson Rings of the type pictured above, to form a more complex Dyson Swarm. Rings' orbital radii are spaced 1.5×10⁷ km with regards to one another, but average orbital radius is still 1 AU. Rings are rotated 15 degrees relative to one another, around a common axis of rotation.

One of the  strangest creations of the Elder Things is the Echos of Rombus a Dyson Bubble which allows
the structure would completely alter the emissions of the central star, and would intercept 100% of the star's energy output. The structure is even now still active & strange distortion effects ripple across the sub hyper space areas surrounding the system. The structure occupies the Rombus system & in fact is the system near Tau Ceti 
Random Effects of The Echos of Rombous  Roll 1d10 

1. The space around the ship curves in such a way that a random time warp sends the ship 1d4 seconds into the past. 
2. The crew are turned inside out with no harmful effects. Charisma goes down by 5 points however as all of your organs are now outside your body. 
3. The ship & crew are made transparent 
4. The ship is randomly teleported 6 feet to the right 
5. The ship & crew are turned into elemental beings 
6. One of the crew gains vast psionic abilities almost on god level 
7. A Great Old takes notice of the ship & is annoyed 
8. The crew see the structure as it was 65 million years ago. Is this real or an illusion 
9. An Elder Thing is teleported aboard & panics 
10. One of the crew becomes a young shaggoth 

A complex psionic key actives the main function of the structure which opens a warp gate between universes 56 light years across allowing one to visit one of the many universe structures created by the Elder Things. A few of the universes have been destroyed or consumed by something known as Ga Lac Tus. Even the oldest data crypts refuse to answer anything about this monster from beyond time & space.

  The struture itself is a mega structure of supreme design & is kept in tip top form by the former slave race of the Elder Things. These terrible monsters roam the hallways of the structure, maintaining, fixing, checking, & some say waiting. Several defense systems left behind by the Elder Things are still with working order
There have been 5 successful expeditions to the structure & many have returned with artifacts of unbelievable alien qualities. 


 A space craft not using the proper psionic codes can expect to be fired upon by a neuliumain missile made partially from shaggoth bio logical material. A missile of this type is  weapon of mass destruction doing 1d30 points of damage unless a craft has a variable shield in place. The damage is spread across several thousand miles. There are no habitable planets within a 10 light year radius of the Rombous system. See Fetotechnology Here

“ It was a terrible, indescribable thing vaster than any subway train—a shapeless congeries of protoplasmic bubbles, faintly self-luminous, and with myriads of temporary eyes forming and un-forming as pustules of greenish light all over the tunnel-filling front that bore down upon us, crushing the frantic penguins and slithering over the glistening floor that it and its kind had swept so evilly free of all litter. ” — H. P. Lovecraft, At The Mountains of Madness